231541787145132 has 96 divisors (see below), whose sum is σ = 600529973621760. Its totient is φ = 77150201129280.

The previous prime is 231541787145107. The next prime is 231541787145167.

231541787145132 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 41 + 7 + 87 + 1 + 4 + 513 + 2 = 666.

231541787145132 is nontrivially palindromic in base 10.

231541787145132 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231541787145132² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3006880543 + ... + 3006957545.

It is an arithmetic number, because the mean of its divisors is an integer number (6255520558560).

Almost surely, 2^{231541787145132} is an apocalyptic number.

It is an amenable number.

231541787145132 is an abundant number, since it is smaller than the sum of its proper divisors (368988186476628).

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

231541787145132 is a wasteful number, since it uses less digits than its factorization.

231541787145132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87620 (or 87612 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 231541787145132 in words is "two hundred thirty-one trillion, five hundred forty-one billion, seven hundred eighty-seven million, one hundred forty-five thousand, one hundred thirty-two".