231555555132 has 48 divisors (see below), whose sum is σ = 589577423232. Its totient is φ = 70148911680.

The previous prime is 231555555109. The next prime is 231555555157.

231555555132 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×231555555132² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238923 + ... + 721245.

It is an arithmetic number, because the mean of its divisors is an integer number (12282862984).

Almost surely, 2^231555555132 is an apocalyptic number.

231555555132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231555555132 is an abundant number, since it is smaller than the sum of its proper divisors (358021868100).

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

231555555132 is a wasteful number, since it uses less digits than its factorization.

231555555132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485978 (or 485976 counting only the distinct ones).

The product of its digits is 562500, while the sum is 42.

It can be divided in two parts, 231555 and 555132, that added together give a palindrome (786687).

The spelling of 231555555132 in words is "two hundred thirty-one billion, five hundred fifty-five million, five hundred fifty-five thousand, one hundred thirty-two".