31131506054 has 24 divisors (see below), whose sum is σ = 54347716584. Its totient is φ = 13318289600.

The previous prime is 31131506041. The next prime is 31131506057. The reversal of 31131506054 is 45060513113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31131506057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3779492 + ... + 3787719.

It is an arithmetic number, because the mean of its divisors is an integer number (2264488191).

Almost surely, 2^31131506054 is an apocalyptic number.

31131506054 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31131506054 is a deficient number, since it is larger than the sum of its proper divisors (23216210530).

31131506054 is a wasteful number, since it uses less digits than its factorization.

31131506054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7567252 (or 7567241 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 31131506054 in words is "thirty-one billion, one hundred thirty-one million, five hundred six thousand, fifty-four".