131431357377 has 32 divisors (see below), whose sum is σ = 196024118400. Its totient is φ = 87032365056.

The previous prime is 131431357363. The next prime is 131431357381. The reversal of 131431357377 is 773753134131.

131431357377 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 3 + 1 + 3 + 573 + 77 = 666.

It is not a de Polignac number, because 131431357377 - 2⁴ = 131431357361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131431357177) 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, 3414913 + ... + 3453185.

It is an arithmetic number, because the mean of its divisors is an integer number (6125753700).

Almost surely, 2^131431357377 is an apocalyptic number.

It is an amenable number.

131431357377 is a deficient number, since it is larger than the sum of its proper divisors (64592761023).

131431357377 is a wasteful number, since it uses less digits than its factorization.

131431357377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39134 (or 39128 counting only the distinct ones).

The product of its digits is 555660, while the sum is 45.

The spelling of 131431357377 in words is "one hundred thirty-one billion, four hundred thirty-one million, three hundred fifty-seven thousand, three hundred seventy-seven".