131012131020 has 24 divisors (see below), whose sum is σ = 366833967024. Its totient is φ = 34936568256.

The previous prime is 131012131013. The next prime is 131012131037. The reversal of 131012131020 is 20131210131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 1091767699 + ... + 1091767818.

It is an arithmetic number, because the mean of its divisors is an integer number (15284748626).

Almost surely, 2^131012131020 is an apocalyptic number.

131012131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131012131020 is an abundant number, since it is smaller than the sum of its proper divisors (235821836004).

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

131012131020 is a wasteful number, since it uses less digits than its factorization.

131012131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183535529 (or 2183535527 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131012131020 its reverse (20131210131), we get a palindrome (151143341151).

The spelling of 131012131020 in words is "one hundred thirty-one billion, twelve million, one hundred thirty-one thousand, twenty".