131999255 has 16 divisors (see below), whose sum is σ = 160532064. Its totient is φ = 104186880.

The previous prime is 131999233. The next prime is 131999261. The reversal of 131999255 is 552999131.

131999255 = 173² + 174² + ... + 737².

It is a de Polignac number, because none of the positive numbers 2^k-131999255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173075 + ... + 173835.

It is an arithmetic number, because the mean of its divisors is an integer number (10033254).

Almost surely, 2^131999255 is an apocalyptic number.

131999255 is a deficient number, since it is larger than the sum of its proper divisors (28532809).

131999255 is a wasteful number, since it uses less digits than its factorization.

131999255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186.

The product of its digits is 109350, while the sum is 44.

The square root of 131999255 is about 11489.0928710669. The cubic root of 131999255 is about 509.1633790666.

The spelling of 131999255 in words is "one hundred thirty-one million, nine hundred ninety-nine thousand, two hundred fifty-five".