231217672 has 32 divisors (see below), whose sum is σ = 505584000. Its totient is φ = 99092112.

The previous prime is 231217661. The next prime is 231217673. The reversal of 231217672 is 276712132.

It is a super-2 number, since 2×231217672² = 106923223690199168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231217673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39388 + ... + 44875.

It is an arithmetic number, because the mean of its divisors is an integer number (15799500).

Almost surely, 2^231217672 is an apocalyptic number.

It is an amenable number.

231217672 is an abundant number, since it is smaller than the sum of its proper divisors (274366328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231217672 is an equidigital number, since it uses as much as digits as its factorization.

231217672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84290 (or 84272 counting only the distinct ones).

The product of its digits is 7056, while the sum is 31.

The square root of 231217672 is about 15205.8433505018. The cubic root of 231217672 is about 613.7719093228.

It can be divided in two parts, 2312 and 17672, that multiplied together give a square (40857664 = 6392²).

The spelling of 231217672 in words is "two hundred thirty-one million, two hundred seventeen thousand, six hundred seventy-two".