231329732 has 6 divisors (see below), whose sum is σ = 404827038. Its totient is φ = 115664864.

The previous prime is 231329729. The next prime is 231329741. The reversal of 231329732 is 237923132.

It can be written as a sum of positive squares in only one way, i.e., 188897536 + 42432196 = 13744^2 + 6514^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28916213 + ... + 28916220.

It is an arithmetic number, because the mean of its divisors is an integer number (67471173).

Almost surely, 2^231329732 is an apocalyptic number.

It is an amenable number.

231329732 is a deficient number, since it is larger than the sum of its proper divisors (173497306).

231329732 is a wasteful number, since it uses less digits than its factorization.

231329732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57832437 (or 57832435 counting only the distinct ones).

The product of its digits is 13608, while the sum is 32.

The square root of 231329732 is about 15209.5276718247. The cubic root of 231329732 is about 613.8710484748.

The spelling of 231329732 in words is "two hundred thirty-one million, three hundred twenty-nine thousand, seven hundred thirty-two".