231242142443500 has 48 divisors (see below), whose sum is σ = 513592717790880. Its totient is φ = 90929113627200.

The previous prime is 231242142443423. The next prime is 231242142443567. The reversal of 231242142443500 is 5344241242132.

It is a self number, because there is not a number n which added to its sum of digits gives 231242142443500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3919328847 + ... + 3919387846.

It is an arithmetic number, because the mean of its divisors is an integer number (10699848287310).

Almost surely, 2^{231242142443500} is an apocalyptic number.

231242142443500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231242142443500 is an abundant number, since it is smaller than the sum of its proper divisors (282350575347380).

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

231242142443500 is a wasteful number, since it uses less digits than its factorization.

231242142443500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838716771 (or 7838716759 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 231242142443500 its reverse (5344241242132), we get a palindrome (236586383685632).

The spelling of 231242142443500 in words is "two hundred thirty-one trillion, two hundred forty-two billion, one hundred forty-two million, four hundred forty-three thousand, five hundred".