131999999999 has 24 divisors (see below), whose sum is σ = 161664015600. Its totient is φ = 107167173120.

The previous prime is 131999999983. The next prime is 132000000001. The reversal of 131999999999 is 999999999131.

It is not a de Polignac number, because 131999999999 - 2⁴ = 131999999983 is a prime.

131999999999 is a modest number, since divided by 999999 gives 131999 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 131999999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131999990999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6384719 + ... + 6405359.

It is an arithmetic number, because the mean of its divisors is an integer number (6736000650).

Almost surely, 2^131999999999 is an apocalyptic number.

131999999999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131999999999 is a deficient number, since it is larger than the sum of its proper divisors (29664015601).

131999999999 is a wasteful number, since it uses less digits than its factorization.

131999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27543 (or 27536 counting only the distinct ones).

The product of its digits is 1162261467, while the sum is 86.

The spelling of 131999999999 in words is "one hundred thirty-one billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".