231975117 has 32 divisors (see below), whose sum is σ = 382008960. Its totient is φ = 137928960.

The previous prime is 231975103. The next prime is 231975119. The reversal of 231975117 is 711579132.

It is not a de Polignac number, because 231975117 - 2⁶ = 231975053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231975119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8373 + ... + 23109.

It is an arithmetic number, because the mean of its divisors is an integer number (11937780).

Almost surely, 2^231975117 is an apocalyptic number.

231975117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231975117 is a deficient number, since it is larger than the sum of its proper divisors (150033843).

231975117 is a wasteful number, since it uses less digits than its factorization.

231975117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14810 (or 14804 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 231975117 is about 15230.7293653324. The cubic root of 231975117 is about 614.4413964036.

The spelling of 231975117 in words is "two hundred thirty-one million, nine hundred seventy-five thousand, one hundred seventeen".