317321923 has 4 divisors (see below), whose sum is σ = 317357560. Its totient is φ = 317286288.

The previous prime is 317321909. The next prime is 317321929. The reversal of 317321923 is 329123713.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 317321923 - 2⁵ = 317321891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317321929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8311 + ... + 26527.

It is an arithmetic number, because the mean of its divisors is an integer number (79339390).

Almost surely, 2^317321923 is an apocalyptic number.

317321923 is a deficient number, since it is larger than the sum of its proper divisors (35637).

317321923 is a wasteful number, since it uses less digits than its factorization.

317321923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35636.

The product of its digits is 6804, while the sum is 31.

The square root of 317321923 is about 17813.5320192263. The cubic root of 317321923 is about 682.0769277953.

The spelling of 317321923 in words is "three hundred seventeen million, three hundred twenty-one thousand, nine hundred twenty-three".