139995911231 has 16 divisors (see below), whose sum is σ = 155344694400. Its totient is φ = 125102244000.

The previous prime is 139995911221. The next prime is 139995911233. The reversal of 139995911231 is 132119599931.

It is a cyclic number.

It is not a de Polignac number, because 139995911231 - 2¹⁴ = 139995894847 is a prime.

It is a super-2 number, since 2×139995911231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139995911233) 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, 298841 + ... + 607698.

It is an arithmetic number, because the mean of its divisors is an integer number (9709043400).

Almost surely, 2^139995911231 is an apocalyptic number.

139995911231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139995911231 is a deficient number, since it is larger than the sum of its proper divisors (15348783169).

139995911231 is a wasteful number, since it uses less digits than its factorization.

139995911231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906790.

The product of its digits is 590490, while the sum is 53.

The spelling of 139995911231 in words is "one hundred thirty-nine billion, nine hundred ninety-five million, nine hundred eleven thousand, two hundred thirty-one".