231578875132 has 24 divisors (see below), whose sum is σ = 442327121712. Its totient is φ = 105210268800.

The previous prime is 231578875103. The next prime is 231578875133.

231578875132 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 231578875132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231578875133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1232719 + ... + 1408102.

It is an arithmetic number, because the mean of its divisors is an integer number (18430296738).

Almost surely, 2^231578875132 is an apocalyptic number.

231578875132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231578875132 is a deficient number, since it is larger than the sum of its proper divisors (210748246580).

231578875132 is a wasteful number, since it uses less digits than its factorization.

231578875132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642829 (or 2642827 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

It can be divided in two parts, 23157 and 8875132, that added together give a square (8898289 = 2983²).

The spelling of 231578875132 in words is "two hundred thirty-one billion, five hundred seventy-eight million, eight hundred seventy-five thousand, one hundred thirty-two".