231237787132 has 30 divisors (see below), whose sum is σ = 445130089040. Its totient is φ = 105108058440.

The previous prime is 231237787129. The next prime is 231237787139. The reversal of 231237787132 is 231787732132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231237787139) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1915668 + ... + 2032795.

Almost surely, 2^231237787132 is an apocalyptic number.

231237787132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231237787132 is a deficient number, since it is larger than the sum of its proper divisors (213892301908).

231237787132 is an equidigital number, since it uses as much as digits as its factorization.

231237787132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948511 (or 3948476 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The spelling of 231237787132 in words is "two hundred thirty-one billion, two hundred thirty-seven million, seven hundred eighty-seven thousand, one hundred thirty-two".