31543130566242 has 64 divisors (see below), whose sum is σ = 71321254727040. Its totient is φ = 10331356102848.

The previous prime is 31543130566193. The next prime is 31543130566243. The reversal of 31543130566242 is 24266503134513.

31543130566242 is a `hidden beast` number, since 3 + 1 + 5 + 4 + 3 + 13 + 0 + 5 + 6 + 624 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (31543130566243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9543993 + ... + 12416684.

It is an arithmetic number, because the mean of its divisors is an integer number (1114394605110).

Almost surely, 2^{31543130566242} is an apocalyptic number.

31543130566242 is an abundant number, since it is smaller than the sum of its proper divisors (39778124160798).

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

31543130566242 is a wasteful number, since it uses less digits than its factorization.

31543130566242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961152 (or 21961146 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 31543130566242 in words is "thirty-one trillion, five hundred forty-three billion, one hundred thirty million, five hundred sixty-six thousand, two hundred forty-two".