Number: 13

Previous Number: 12
Next Number: 14
Absolute: 13
Sign: positive
Even or Odd: Odd
Length: 2 digits (Significant Figures, Sig Fig)
Counter: -13
Inverse: 0.076923076923077
Reverse: 31 ; Palindromic: No
Half: 6.5
Double: 26
Undulating: Yes
Fibonacci: Yes ; Previous: 8 ; Next: 21
Fibonacci Prime: Yes ; Previous: 5 ; Next: 89
Evil or Odious: Odious
Lucas: No
Narcissistic: No
Pell: No
Octagonal: No
Centered Octagonal: No
Untouchable: No
AZ Alphabet Character: M
AZ Alphabet Character, Backwards: N
QWERTY Alphabet Character: D
QWERTY Alphabet Character, Backwards: F
Valid phone number (US)?: No
Valid SSN (US)?: No
Human Readable Size (Kilo: 1000): 13B
Human Readable Size (Kibi: 1024): 13B
UNIX Time Stamp: 1970-01-01 00:00:13
HTTP Status Code: Invalid
Digits in English (and NATO IPA): one three
Digits in Morse Code: .---- ...--
Square Root: 3.605551275464
Sine: 0.42016703682664
Cosine: 0.9074467814502
Tangent: 0.46302113293649
Inverse Tangent: 1.4940244355251
Secant: 2.3800058366135
Cosecant: 1.1019929988642
Cotangent: 2.1597286362676
Inverse Cotangent: 0.66933309537773
Roman Number: XIII

Number: 13


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