316657945 has 8 divisors (see below), whose sum is σ = 381980160. Its totient is φ = 251999280.

The previous prime is 316657909. The next prime is 316657961. The reversal of 316657945 is 549756613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 316657945 - 2²³ = 308269337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316657895 and 316657904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164835 + ... + 166744.

It is an arithmetic number, because the mean of its divisors is an integer number (47747520).

Almost surely, 2^316657945 is an apocalyptic number.

It is an amenable number.

316657945 is a deficient number, since it is larger than the sum of its proper divisors (65322215).

316657945 is a wasteful number, since it uses less digits than its factorization.

316657945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331775.

The product of its digits is 680400, while the sum is 46.

The square root of 316657945 is about 17794.8853606872. The cubic root of 316657945 is about 681.6008599209.

The spelling of 316657945 in words is "three hundred sixteen million, six hundred fifty-seven thousand, nine hundred forty-five".