257316913 has 32 divisors (see below), whose sum is σ = 324725760. Its totient is φ = 198804480.

The previous prime is 257316883. The next prime is 257316923. The reversal of 257316913 is 319613752.

257316913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-257316913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257316923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596808 + ... + 597238.

It is an arithmetic number, because the mean of its divisors is an integer number (10147680).

Almost surely, 2^257316913 is an apocalyptic number.

It is an amenable number.

257316913 is a deficient number, since it is larger than the sum of its proper divisors (67408847).

257316913 is a wasteful number, since it uses less digits than its factorization.

257316913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its digits is 34020, while the sum is 37.

The square root of 257316913 is about 16041.1007415327. The cubic root of 257316913 is about 636.0473451101.

The spelling of 257316913 in words is "two hundred fifty-seven million, three hundred sixteen thousand, nine hundred thirteen".