31331313020124 has 144 divisors (see below), whose sum is σ = 85850884223104. Its totient is φ = 9577303401600.

The previous prime is 31331313020081. The next prime is 31331313020191. The reversal of 31331313020124 is 42102031313313.

31331313020124 is a `hidden beast` number, since 3 + 1 + 331 + 3 + 1 + 302 + 0 + 1 + 24 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43481619 + ... + 44196309.

Almost surely, 2^{31331313020124} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31331313020124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42925442111552).

31331313020124 is an abundant number, since it is smaller than the sum of its proper divisors (54519571202980).

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

31331313020124 is a wasteful number, since it uses less digits than its factorization.

31331313020124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715328 (or 715323 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31331313020124 its reverse (42102031313313), we get a palindrome (73433344333437).

The spelling of 31331313020124 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred thirteen million, twenty thousand, one hundred twenty-four".