131172157701 has 32 divisors (see below), whose sum is σ = 212708330240. Its totient is φ = 79398014400.

The previous prime is 131172157639. The next prime is 131172157717. The reversal of 131172157701 is 107751271131.

It is a happy number.

131172157701 is a `hidden beast` number, since 1 + 3 + 11 + 72 + 1 + 577 + 0 + 1 = 666.

It is not a de Polignac number, because 131172157701 - 2⁹ = 131172157189 is a prime.

It is a super-2 number, since 2×131172157701² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131172157751) 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, 3041785 + ... + 3084606.

It is an arithmetic number, because the mean of its divisors is an integer number (6647135320).

Almost surely, 2^131172157701 is an apocalyptic number.

It is an amenable number.

131172157701 is a deficient number, since it is larger than the sum of its proper divisors (81536172539).

131172157701 is a wasteful number, since it uses less digits than its factorization.

131172157701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126474 (or 6126468 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 36.

The spelling of 131172157701 in words is "one hundred thirty-one billion, one hundred seventy-two million, one hundred fifty-seven thousand, seven hundred one".