231297032 has 36 divisors (see below), whose sum is σ = 459331695. Its totient is φ = 109174608.

The previous prime is 231297023. The next prime is 231297037. The reversal of 231297032 is 230792132.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 115648516 + 115648516 = 10754^2 + 10754^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10754.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231296986 and 231297004.

It is not an unprimeable number, because it can be changed into a prime (231297037) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 817163 + ... + 817445.

Almost surely, 2^231297032 is an apocalyptic number.

It is an amenable number.

231297032 is a deficient number, since it is larger than the sum of its proper divisors (228034663).

231297032 is an equidigital number, since it uses as much as digits as its factorization.

231297032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 231297032 is about 15208.4526497603. The cubic root of 231297032 is about 613.8421221899.

The spelling of 231297032 in words is "two hundred thirty-one million, two hundred ninety-seven thousand, thirty-two".