131431339999 has 4 divisors (see below), whose sum is σ = 134636982480. Its totient is φ = 128225697520.

The previous prime is 131431339979. The next prime is 131431340101. The reversal of 131431339999 is 999933134131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131431339999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131431339979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602821179 + ... + 1602821260.

It is an arithmetic number, because the mean of its divisors is an integer number (33659245620).

Almost surely, 2^131431339999 is an apocalyptic number.

131431339999 is a deficient number, since it is larger than the sum of its proper divisors (3205642481).

131431339999 is an equidigital number, since it uses as much as digits as its factorization.

131431339999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205642480.

The product of its digits is 2125764, while the sum is 55.

The spelling of 131431339999 in words is "one hundred thirty-one billion, four hundred thirty-one million, three hundred thirty-nine thousand, nine hundred ninety-nine".