231796917 has 24 divisors (see below), whose sum is σ = 377464640. Its totient is φ = 140481000.

The previous prime is 231796909. The next prime is 231796937. The reversal of 231796917 is 719697132.

It is not a de Polignac number, because 231796917 - 2³ = 231796909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231796907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32209 + ... + 38742.

Almost surely, 2^231796917 is an apocalyptic number.

231796917 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231796917 is a deficient number, since it is larger than the sum of its proper divisors (145667723).

231796917 is a wasteful number, since it uses less digits than its factorization.

231796917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70982 (or 70965 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 231796917 is about 15224.8782261140. The cubic root of 231796917 is about 614.2840210389.

The spelling of 231796917 in words is "two hundred thirty-one million, seven hundred ninety-six thousand, nine hundred seventeen".