131512371620 has 96 divisors (see below), whose sum is σ = 342347523840. Its totient is φ = 41402511360.

The previous prime is 131512371619. The next prime is 131512371629. The reversal of 131512371620 is 26173215131.

It is not an unprimeable number, because it can be changed into a prime (131512371629) 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, 576290 + ... + 771449.

It is an arithmetic number, because the mean of its divisors is an integer number (3566120040).

Almost surely, 2^131512371620 is an apocalyptic number.

131512371620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131512371620 is an abundant number, since it is smaller than the sum of its proper divisors (210835152220).

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

131512371620 is a wasteful number, since it uses less digits than its factorization.

131512371620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347813 (or 1347811 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 131512371620 its reverse (26173215131), we get a palindrome (157685586751).

The spelling of 131512371620 in words is "one hundred thirty-one billion, five hundred twelve million, three hundred seventy-one thousand, six hundred twenty".