231780032 has 28 divisors (see below), whose sum is σ = 501752616. Its totient is φ = 105354240.

The previous prime is 231780013. The next prime is 231780041. The reversal of 231780032 is 230087132.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 231779983 and 231780010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163913 + ... + 165320.

Almost surely, 2^231780032 is an apocalyptic number.

231780032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231780032 is an abundant number, since it is smaller than the sum of its proper divisors (269972584).

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

231780032 is a wasteful number, since it uses less digits than its factorization.

231780032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329256 (or 329246 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 231780032 is about 15224.3236959807. The cubic root of 231780032 is about 614.2691050545.

The spelling of 231780032 in words is "two hundred thirty-one million, seven hundred eighty thousand, thirty-two".