131387685210 has 48 divisors (see below), whose sum is σ = 341695846440. Its totient is φ = 35027704320.

The previous prime is 131387685193. The next prime is 131387685211. The reversal of 131387685210 is 12586783131.

It is a happy number.

131387685210 is a `hidden beast` number, since 1 + 31 + 38 + 7 + 68 + 521 + 0 = 666.

131387685210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 71817032169 + 59570653041 = 267987^2 + 244071^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (131387685211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167830 + ... + 539390.

Almost surely, 2^131387685210 is an apocalyptic number.

131387685210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131387685210 is an abundant number, since it is smaller than the sum of its proper divisors (210308161230).

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

131387685210 is a wasteful number, since it uses less digits than its factorization.

131387685210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375503 (or 375500 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 131387685210 in words is "one hundred thirty-one billion, three hundred eighty-seven million, six hundred eighty-five thousand, two hundred ten".