131908128899 has 8 divisors (see below), whose sum is σ = 132593643792. Its totient is φ = 131223183840.

The previous prime is 131908128893. The next prime is 131908128949. The reversal of 131908128899 is 998821809131.

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 131908128899 - 2¹⁶ = 131908063363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131908128893) 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, 325697 + ... + 608189.

It is an arithmetic number, because the mean of its divisors is an integer number (16574205474).

Almost surely, 2^131908128899 is an apocalyptic number.

131908128899 is a deficient number, since it is larger than the sum of its proper divisors (685514893).

131908128899 is a wasteful number, since it uses less digits than its factorization.

131908128899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284917.

The product of its (nonzero) digits is 2239488, while the sum is 59.

The spelling of 131908128899 in words is "one hundred thirty-one billion, nine hundred eight million, one hundred twenty-eight thousand, eight hundred ninety-nine".