131988087 has 48 divisors (see below), whose sum is σ = 238887168. Its totient is φ = 68221440.

The previous prime is 131988047. The next prime is 131988097. The reversal of 131988087 is 780889131.

It is not a de Polignac number, because 131988087 - 2⁷ = 131987959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131988037) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195783 + ... + 196455.

It is an arithmetic number, because the mean of its divisors is an integer number (4976816).

Almost surely, 2^131988087 is an apocalyptic number.

131988087 is a deficient number, since it is larger than the sum of its proper divisors (106899081).

131988087 is a wasteful number, since it uses less digits than its factorization.

131988087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 131988087 is about 11488.6068345992. The cubic root of 131988087 is about 509.1490191447.

It can be divided in two parts, 13 and 1988087, that added together give a square (1988100 = 1410²).

The spelling of 131988087 in words is "one hundred thirty-one million, nine hundred eighty-eight thousand, eighty-seven".