31331243124 has 48 divisors (see below), whose sum is σ = 85504372800. Its totient is φ = 9894076128.

The previous prime is 31331243113. The next prime is 31331243173. The reversal of 31331243124 is 42134213313.

It is a happy number.

31331243124 is a `hidden beast` number, since 31 + 3 + 312 + 4 + 312 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

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, 7632267 + ... + 7636370.

It is an arithmetic number, because the mean of its divisors is an integer number (1781341100).

Almost surely, 2^31331243124 is an apocalyptic number.

It is an amenable number.

31331243124 is an abundant number, since it is smaller than the sum of its proper divisors (54173129676).

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

31331243124 is a wasteful number, since it uses less digits than its factorization.

31331243124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15268669 (or 15268661 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 31331243124 its reverse (42134213313), we get a palindrome (73465456437).

The spelling of 31331243124 in words is "thirty-one billion, three hundred thirty-one million, two hundred forty-three thousand, one hundred twenty-four".