131507157860 has 24 divisors (see below), whose sum is σ = 297408496056. Its totient is φ = 48556488960.

The previous prime is 131507157853. The next prime is 131507157863. The reversal of 131507157860 is 68751705131.

It can be written as a sum of positive squares in 4 ways, for example, as 1035938596 + 130471219264 = 32186^2 + 361208^2 .

It is not an unprimeable number, because it can be changed into a prime (131507157863) 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, 252898121 + ... + 252898640.

It is an arithmetic number, because the mean of its divisors is an integer number (12392020669).

Almost surely, 2^131507157860 is an apocalyptic number.

131507157860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131507157860 is an abundant number, since it is smaller than the sum of its proper divisors (165901338196).

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

131507157860 is a wasteful number, since it uses less digits than its factorization.

131507157860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505796783 (or 505796781 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 131507157860 in words is "one hundred thirty-one billion, five hundred seven million, one hundred fifty-seven thousand, eight hundred sixty".