131008899 has 24 divisors (see below), whose sum is σ = 208163088. Its totient is φ = 73032960.

The previous prime is 131008877. The next prime is 131008903. The reversal of 131008899 is 998800131.

It is a happy number.

It is not a de Polignac number, because 131008899 - 2⁸ = 131008643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131008849) 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, 4842 + ... + 16895.

It is an arithmetic number, because the mean of its divisors is an integer number (8673462).

Almost surely, 2^131008899 is an apocalyptic number.

131008899 is a deficient number, since it is larger than the sum of its proper divisors (77154189).

131008899 is a wasteful number, since it uses less digits than its factorization.

131008899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21795 (or 21788 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 131008899 is about 11445.9118902777. The cubic root of 131008899 is about 507.8868077625.

The spelling of 131008899 in words is "one hundred thirty-one million, eight thousand, eight hundred ninety-nine".