139457495931 has 16 divisors (see below), whose sum is σ = 206706232320. Its totient is φ = 83051609760.

The previous prime is 139457495923. The next prime is 139457495939. The reversal of 139457495931 is 139594754931.

It is an interprime number because it is at equal distance from previous prime (139457495923) and next prime (139457495939).

It is not a de Polignac number, because 139457495931 - 2³ = 139457495923 is a prime.

It is a super-2 number, since 2×139457495931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139457495939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57673521 + ... + 57675938.

It is an arithmetic number, because the mean of its divisors is an integer number (12919139520).

Almost surely, 2^139457495931 is an apocalyptic number.

139457495931 is a deficient number, since it is larger than the sum of its proper divisors (67248736389).

139457495931 is a wasteful number, since it uses less digits than its factorization.

139457495931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115349506.

The product of its digits is 18370800, while the sum is 60.

The spelling of 139457495931 in words is "one hundred thirty-nine billion, four hundred fifty-seven million, four hundred ninety-five thousand, nine hundred thirty-one".