231197428824 has 72 divisors (see below), whose sum is σ = 587989647180. Its totient is φ = 75755324160.

The previous prime is 231197428823. The next prime is 231197428837. The reversal of 231197428824 is 428824791132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231197428823) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 143689332 + ... + 143690940.

Almost surely, 2^231197428824 is an apocalyptic number.

231197428824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231197428824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293994823590).

231197428824 is an abundant number, since it is smaller than the sum of its proper divisors (356792218356).

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

231197428824 is an frugal number, since it uses more digits than its factorization.

231197428824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 1675 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 231197428824 in words is "two hundred thirty-one billion, one hundred ninety-seven million, four hundred twenty-eight thousand, eight hundred twenty-four".