31131052324 has 24 divisors (see below), whose sum is σ = 58544972640. Its totient is φ = 14431249536.

The previous prime is 31131052321. The next prime is 31131052333. The reversal of 31131052324 is 42325013113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31131052321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3411934 + ... + 3421045.

It is an arithmetic number, because the mean of its divisors is an integer number (2439373860).

Almost surely, 2^31131052324 is an apocalyptic number.

31131052324 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31131052324 is a deficient number, since it is larger than the sum of its proper divisors (27413920316).

31131052324 is a wasteful number, since it uses less digits than its factorization.

31131052324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833067 (or 6833065 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31131052324 its reverse (42325013113), we get a palindrome (73456065437).

The spelling of 31131052324 in words is "thirty-one billion, one hundred thirty-one million, fifty-two thousand, three hundred twenty-four".