15131631020 has 48 divisors (see below), whose sum is σ = 35860557600. Its totient is φ = 5312670720.

The previous prime is 15131630947. The next prime is 15131631083. The reversal of 15131631020 is 2013613151.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1179485 + ... + 1192244.

It is an arithmetic number, because the mean of its divisors is an integer number (747094950).

Almost surely, 2^15131631020 is an apocalyptic number.

15131631020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15131631020 is an abundant number, since it is smaller than the sum of its proper divisors (20728926580).

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

15131631020 is a wasteful number, since it uses less digits than its factorization.

15131631020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371778 (or 2371776 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The spelling of 15131631020 in words is "fifteen billion, one hundred thirty-one million, six hundred thirty-one thousand, twenty".