139434434931 has 16 divisors (see below), whose sum is σ = 203127222528. Its totient is φ = 84375093600.

The previous prime is 139434434863. The next prime is 139434434941.

139434434931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 139434434931 - 2¹¹ = 139434432883 is a prime.

It is a super-2 number, since 2×139434434931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139434434941) 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, 3243940 + ... + 3286641.

It is an arithmetic number, because the mean of its divisors is an integer number (12695451408).

Almost surely, 2^139434434931 is an apocalyptic number.

139434434931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139434434931 is a deficient number, since it is larger than the sum of its proper divisors (63692787597).

139434434931 is a wasteful number, since it uses less digits than its factorization.

139434434931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531242.

The product of its digits is 1679616, while the sum is 48.

The spelling of 139434434931 in words is "one hundred thirty-nine billion, four hundred thirty-four million, four hundred thirty-four thousand, nine hundred thirty-one".