231551144000 has 112 divisors (see below), whose sum is σ = 625567228416. Its totient is φ = 84200384000.

The previous prime is 231551143963. The next prime is 231551144029. The reversal of 231551144000 is 441155132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227632 + ... + 1403631.

Almost surely, 2^231551144000 is an apocalyptic number.

231551144000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231551144000 is an abundant number, since it is smaller than the sum of its proper divisors (394016084416).

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

231551144000 is a wasteful number, since it uses less digits than its factorization.

231551144000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631301 (or 2631281 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 231551144000 its reverse (441155132), we get a palindrome (231992299132).

The spelling of 231551144000 in words is "two hundred thirty-one billion, five hundred fifty-one million, one hundred forty-four thousand".