131299988 has 12 divisors (see below), whose sum is σ = 230089440. Its totient is φ = 65560152.

The previous prime is 131299979. The next prime is 131299997. The reversal of 131299988 is 889992131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131299979) and next prime (131299997).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19118 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (19174120).

Almost surely, 2^131299988 is an apocalyptic number.

It is an amenable number.

131299988 is a deficient number, since it is larger than the sum of its proper divisors (98789452).

131299988 is a wasteful number, since it uses less digits than its factorization.

131299988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44926 (or 44924 counting only the distinct ones).

The product of its digits is 279936, while the sum is 50.

The square root of 131299988 is about 11458.6206848818. The cubic root of 131299988 is about 508.2626878325.

The spelling of 131299988 in words is "one hundred thirty-one million, two hundred ninety-nine thousand, nine hundred eighty-eight".