317123978 has 8 divisors (see below), whose sum is σ = 475856640. Its totient is φ = 158505100.

The previous prime is 317123969. The next prime is 317123987. The reversal of 317123978 is 879321713.

It is an interprime number because it is at equal distance from previous prime (317123969) and next prime (317123987).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21098 + ... + 32853.

It is an arithmetic number, because the mean of its divisors is an integer number (59482080).

Almost surely, 2^317123978 is an apocalyptic number.

317123978 is a deficient number, since it is larger than the sum of its proper divisors (158732662).

317123978 is a wasteful number, since it uses less digits than its factorization.

317123978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56892.

The product of its digits is 63504, while the sum is 41.

The square root of 317123978 is about 17807.9751235226. The cubic root of 317123978 is about 681.9350720633.

The spelling of 317123978 in words is "three hundred seventeen million, one hundred twenty-three thousand, nine hundred seventy-eight".