231567117 has 32 divisors (see below), whose sum is σ = 347136000. Its totient is φ = 136624320.

The previous prime is 231567113. The next prime is 231567131. The reversal of 231567117 is 711765132.

It is not a de Polignac number, because 231567117 - 2² = 231567113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231567113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48984 + ... + 53502.

It is an arithmetic number, because the mean of its divisors is an integer number (10848000).

Almost surely, 2^231567117 is an apocalyptic number.

It is an amenable number.

231567117 is a deficient number, since it is larger than the sum of its proper divisors (115568883).

231567117 is a wasteful number, since it uses less digits than its factorization.

231567117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601.

The product of its digits is 8820, while the sum is 33.

The square root of 231567117 is about 15217.3294963341. The cubic root of 231567117 is about 614.0809565858.

The spelling of 231567117 in words is "two hundred thirty-one million, five hundred sixty-seven thousand, one hundred seventeen".