231213313344 has 112 divisors (see below), whose sum is σ = 658952573888. Its totient is φ = 71127134208.

The previous prime is 231213313343. The next prime is 231213313423. The reversal of 231213313344 is 443313312132.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231213313343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17907339 + ... + 17920245.

It is an arithmetic number, because the mean of its divisors is an integer number (5883505124).

Almost surely, 2^231213313344 is an apocalyptic number.

231213313344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231213313344 is an abundant number, since it is smaller than the sum of its proper divisors (427739260544).

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

231213313344 is a wasteful number, since it uses less digits than its factorization.

231213313344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112 (or 20102 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

Adding to 231213313344 its reverse (443313312132), we get a palindrome (674526625476).

The spelling of 231213313344 in words is "two hundred thirty-one billion, two hundred thirteen million, three hundred thirteen thousand, three hundred forty-four".