131320331999 has 8 divisors (see below), whose sum is σ = 141173034240. Its totient is φ = 121761740376.

The previous prime is 131320331983. The next prime is 131320332029. The reversal of 131320331999 is 999133023131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131320331999 - 2⁴ = 131320331983 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 (131320331929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73526729 + ... + 73528514.

It is an arithmetic number, because the mean of its divisors is an integer number (17646629280).

Almost surely, 2^131320331999 is an apocalyptic number.

131320331999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

131320331999 is a deficient number, since it is larger than the sum of its proper divisors (9852702241).

131320331999 is a wasteful number, since it uses less digits than its factorization.

131320331999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147055309.

The product of its (nonzero) digits is 118098, while the sum is 44.

The spelling of 131320331999 in words is "one hundred thirty-one billion, three hundred twenty million, three hundred thirty-one thousand, nine hundred ninety-nine".