315031513 has 4 divisors (see below), whose sum is σ = 315116928. Its totient is φ = 314946100.

The previous prime is 315031499. The next prime is 315031531. The reversal of 315031513 is 315130513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315031513 - 2²¹ = 312934361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315031543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36913 + ... + 44638.

It is an arithmetic number, because the mean of its divisors is an integer number (78779232).

Almost surely, 2^315031513 is an apocalyptic number.

It is an amenable number.

315031513 is a deficient number, since it is larger than the sum of its proper divisors (85415).

315031513 is an equidigital number, since it uses as much as digits as its factorization.

315031513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85414.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 315031513 is about 17749.1271052973. The cubic root of 315031513 is about 680.4319005059.

The spelling of 315031513 in words is "three hundred fifteen million, thirty-one thousand, five hundred thirteen".