231373317 has 16 divisors (see below), whose sum is σ = 371125760. Its totient is φ = 125254512.

The previous prime is 231373301. The next prime is 231373327. The reversal of 231373317 is 713373132.

231373317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231373317 - 2⁴ = 231373301 is a prime.

It is a super-2 number, since 2×231373317² = 107067223639164978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231373327) 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, 289543 + ... + 290340.

It is an arithmetic number, because the mean of its divisors is an integer number (23195360).

Almost surely, 2^231373317 is an apocalyptic number.

It is an amenable number.

231373317 is a deficient number, since it is larger than the sum of its proper divisors (139752443).

231373317 is a wasteful number, since it uses less digits than its factorization.

231373317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579912.

The product of its digits is 7938, while the sum is 30.

The square root of 231373317 is about 15210.9604233263. The cubic root of 231373317 is about 613.9095993480.

The spelling of 231373317 in words is "two hundred thirty-one million, three hundred seventy-three thousand, three hundred seventeen".