313256945 has 16 divisors (see below), whose sum is σ = 380946240. Its totient is φ = 247266624.

The previous prime is 313256897. The next prime is 313256947. The reversal of 313256945 is 549652313.

It is a cyclic number.

It is not a de Polignac number, because 313256945 - 2¹⁴ = 313240561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313256899 and 313256908.

It is not an unprimeable number, because it can be changed into a prime (313256947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150371 + ... + 152439.

It is an arithmetic number, because the mean of its divisors is an integer number (23809140).

Almost surely, 2^313256945 is an apocalyptic number.

It is an amenable number.

313256945 is a deficient number, since it is larger than the sum of its proper divisors (67689295).

313256945 is a wasteful number, since it uses less digits than its factorization.

313256945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464.

The product of its digits is 97200, while the sum is 38.

The square root of 313256945 is about 17699.0662183065. The cubic root of 313256945 is about 679.1518729804.

The spelling of 313256945 in words is "three hundred thirteen million, two hundred fifty-six thousand, nine hundred forty-five".