231021031232 has 14 divisors (see below), whose sum is σ = 458432358978. Its totient is φ = 115510515584.

The previous prime is 231021031223. The next prime is 231021031247. The reversal of 231021031232 is 232130120132.

It can be written as a sum of positive squares in only one way, i.e., 209851945216 + 21169086016 = 458096^2 + 145496^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804851743 + ... + 1804851870.

Almost surely, 2^231021031232 is an apocalyptic number.

It is an amenable number.

231021031232 is a deficient number, since it is larger than the sum of its proper divisors (227411327746).

231021031232 is an equidigital number, since it uses as much as digits as its factorization.

231021031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609703625 (or 3609703615 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231021031232 its reverse (232130120132), we get a palindrome (463151151364).

The spelling of 231021031232 in words is "two hundred thirty-one billion, twenty-one million, thirty-one thousand, two hundred thirty-two".