139279972931 has 16 divisors (see below), whose sum is σ = 159612076800. Its totient is φ = 120300148320.

The previous prime is 139279972903. The next prime is 139279972939.

139279972931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 139279972931 - 2¹⁰ = 139279971907 is a prime.

It is a super-2 number, since 2×139279972931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139279972939) 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, 1809665 + ... + 1885058.

It is an arithmetic number, because the mean of its divisors is an integer number (9975754800).

Almost surely, 2^139279972931 is an apocalyptic number.

139279972931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139279972931 is a deficient number, since it is larger than the sum of its proper divisors (20332103869).

139279972931 is a wasteful number, since it uses less digits than its factorization.

139279972931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694906.

The product of its digits is 11573604, while the sum is 62.

The spelling of 139279972931 in words is "one hundred thirty-nine billion, two hundred seventy-nine million, nine hundred seventy-two thousand, nine hundred thirty-one".