231655556132 has 48 divisors (see below), whose sum is σ = 544309567872. Its totient is φ = 83312686080.

The previous prime is 231655556117. The next prime is 231655556137.

231655556132 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (231655556137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28924013 + ... + 28932020.

It is an arithmetic number, because the mean of its divisors is an integer number (11339782664).

Almost surely, 2^231655556132 is an apocalyptic number.

231655556132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231655556132 is an abundant number, since it is smaller than the sum of its proper divisors (312654011740).

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

231655556132 is a wasteful number, since it uses less digits than its factorization.

231655556132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57856068 (or 57856066 counting only the distinct ones).

The product of its digits is 810000, while the sum is 44.

It can be divided in two parts, 231655 and 556132, that added together give a palindrome (787787).

The spelling of 231655556132 in words is "two hundred thirty-one billion, six hundred fifty-five million, five hundred fifty-six thousand, one hundred thirty-two".