231577142143560 has 32 divisors (see below), whose sum is σ = 694731426431040. Its totient is φ = 61753904571584.

The previous prime is 231577142143547. The next prime is 231577142143561. The reversal of 231577142143560 is 65341241775132.

It is not an unprimeable number, because it can be changed into a prime (231577142143561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964904758812 + ... + 964904759051.

It is an arithmetic number, because the mean of its divisors is an integer number (21710357075970).

Almost surely, 2^{231577142143560} is an apocalyptic number.

231577142143560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231577142143560 is an abundant number, since it is smaller than the sum of its proper divisors (463154284287480).

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

231577142143560 is a wasteful number, since it uses less digits than its factorization.

231577142143560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929809517877 (or 1929809517873 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 231577142143560 in words is "two hundred thirty-one trillion, five hundred seventy-seven billion, one hundred forty-two million, one hundred forty-three thousand, five hundred sixty".