138977034231 has 64 divisors (see below), whose sum is σ = 226541445120. Its totient is φ = 74016581760.

The previous prime is 138977034211. The next prime is 138977034277. The reversal of 138977034231 is 132430779831.

It is not a de Polignac number, because 138977034231 - 2⁵ = 138977034199 is a prime.

It is a super-2 number, since 2×138977034231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138977034211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23709241 + ... + 23715101.

It is an arithmetic number, because the mean of its divisors is an integer number (3539710080).

Almost surely, 2^138977034231 is an apocalyptic number.

138977034231 is a deficient number, since it is larger than the sum of its proper divisors (87564410889).

138977034231 is a wasteful number, since it uses less digits than its factorization.

138977034231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 138977034231 in words is "one hundred thirty-eight billion, nine hundred seventy-seven million, thirty-four thousand, two hundred thirty-one".