Properties of the Number 31415

Thirty-One Thousand Four Hundred Fifteen

Basics

Value: 31414 → 31415 → 31416

Parity: odd

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 61 × 103

Divisors: 1, 5, 61, 103, 305, 515, 6283, 31415

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010110111

Octal: 75267

Duodecimal: 1621B

Hexadecimal: 7ab7

Square: 986902225

Square Root: 177.2427713617681

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) is the integer whose decimal digits are the first n+1 decimal digits of π. A11545

First 5-digit number to appear n times in the decimal expansion of π. A277171

Put the natural numbers together without spaces and read them five at a time advancing one space each time. A193493

a(n) is the smallest composite squarefree number k such that (p+n) | (k+1) for all primes dividing k. A274446

Squarefree kernel of floor(π*10ⁿ), π = 3.14.... A89289

Scan first k digits of π starting with 3, for k = 1,2,3,..., record all distinct numbers in the order in which they appear. A322777

Numbers n such that (4·6ⁿ + 1)/5 is prime. A248613

Triangular array, read by rows: T(n,k) = greatest decimal number of length k contained as a string in the first n positions of the decimal expansion of π, 1 <= k <= n. A86667

Numbers k such that the first k digits of the decimal expansion of π form a prime. A60421

Primes in A092845 (decimal expansion of π written backwards). A7523