231201232000 has 64 divisors (see below), whose sum is σ = 574824102840. Its totient is φ = 92480486400.

The previous prime is 231201231997. The next prime is 231201232049. The reversal of 231201232000 is 232102132.

It can be written as a sum of positive squares in 4 ways, for example, as 136302732864 + 94898499136 = 369192^2 + 308056^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7209039 + ... + 7241038.

Almost surely, 2^231201232000 is an apocalyptic number.

231201232000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231201232000 is an abundant number, since it is smaller than the sum of its proper divisors (343622870840).

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

231201232000 is an equidigital number, since it uses as much as digits as its factorization.

231201232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14450106 (or 14450084 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 231201232000 its reverse (232102132), we get a palindrome (231433334132).

The spelling of 231201232000 in words is "two hundred thirty-one billion, two hundred one million, two hundred thirty-two thousand".