131377021137 has 24 divisors (see below), whose sum is σ = 195916131840. Its totient is φ = 84771321120.

The previous prime is 131377021117. The next prime is 131377021163. The reversal of 131377021137 is 731120773131.

131377021137 is a `hidden beast` number, since 131 + 377 + 0 + 21 + 137 = 666.

It is not a de Polignac number, because 131377021137 - 2⁸ = 131377020881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131377021117) 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, 969187 + ... + 1096392.

It is an arithmetic number, because the mean of its divisors is an integer number (8163172160).

Almost surely, 2^131377021137 is an apocalyptic number.

It is an amenable number.

131377021137 is a deficient number, since it is larger than the sum of its proper divisors (64539110703).

131377021137 is a wasteful number, since it uses less digits than its factorization.

131377021137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065813 (or 2065810 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

Adding to 131377021137 its reverse (731120773131), we get a palindrome (862497794268).

The spelling of 131377021137 in words is "one hundred thirty-one billion, three hundred seventy-seven million, twenty-one thousand, one hundred thirty-seven".