231377431548 has 24 divisors (see below), whose sum is σ = 550067102928. Its totient is φ = 75670606336.

The previous prime is 231377431541. The next prime is 231377431553. The reversal of 231377431548 is 845134773132.

It is a junction number, because it is equal to n+sod(n) for n = 231377431497 and 231377431506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231377431541) 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, 181899861 + ... + 181901132.

It is an arithmetic number, because the mean of its divisors is an integer number (22919462622).

Almost surely, 2^231377431548 is an apocalyptic number.

It is an amenable number.

231377431548 is an abundant number, since it is smaller than the sum of its proper divisors (318689671380).

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

231377431548 is a wasteful number, since it uses less digits than its factorization.

231377431548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363801053 (or 363801051 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 231377431548 in words is "two hundred thirty-one billion, three hundred seventy-seven million, four hundred thirty-one thousand, five hundred forty-eight".