139919919931 has 32 divisors (see below), whose sum is σ = 158255677440. Its totient is φ = 122616698400.

The previous prime is 139919919911. The next prime is 139919919943.

139919919931 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 139919919931 - 2⁵ = 139919919899 is a prime.

It is a super-2 number, since 2×139919919931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139919919911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9118936 + ... + 9134266.

It is an arithmetic number, because the mean of its divisors is an integer number (4945489920).

Almost surely, 2^139919919931 is an apocalyptic number.

139919919931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139919919931 is a deficient number, since it is larger than the sum of its proper divisors (18335757509).

139919919931 is a wasteful number, since it uses less digits than its factorization.

139919919931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15655.

The product of its digits is 4782969, while the sum is 64.

The spelling of 139919919931 in words is "one hundred thirty-nine billion, nine hundred nineteen million, nine hundred nineteen thousand, nine hundred thirty-one".