Properties of the Number 315

Three Hundred Fifteen

Basics

Value: 314 → 315 → 316

Parity: odd

Prime: No

Previous Prime: 313

Next Prime: 317

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 35, 45, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111011

Octal: 473

Duodecimal: 223

Hexadecimal: 13b

Square: 99225

Square Root: 17.74823934929885

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

Completely multiplicative with a(prime(k)) = prime(k+1). A3961

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Numbers that are products of 4 primes. A14613

Triangular matchstick numbers: a(n) = 3·n*(n+1)/2. A45943

Numbers having k prime factors (counted with multiplicity), the largest of which is the k-th prime. A106529

Triangle T(n,k) of rencontres numbers (number of permutations of n elements with k fixed points). A8290

a(n) = 6·n+3. A16945

Multiples of 9: a(n) = 9·n. A8591

Multiples of 7. A8589

a(n) = (n⁴ + n)/2 (Row sums of an n X n X n magic cube, when it exists). A27441