131131955 has 4 divisors (see below), whose sum is σ = 157358352. Its totient is φ = 104905560.

The previous prime is 131131943. The next prime is 131131961. The reversal of 131131955 is 559131131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559131131 = 13 ⋅43010087.

It is not a de Polignac number, because 131131955 - 2¹⁸ = 130869811 is a prime.

It is a Duffinian 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, 13113191 + ... + 13113200.

It is an arithmetic number, because the mean of its divisors is an integer number (39339588).

Almost surely, 2^131131955 is an apocalyptic number.

131131955 is a deficient number, since it is larger than the sum of its proper divisors (26226397).

131131955 is an equidigital number, since it uses as much as digits as its factorization.

131131955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26226396.

The product of its digits is 2025, while the sum is 29.

The square root of 131131955 is about 11451.2861723040. The cubic root of 131131955 is about 508.0457765081.

The spelling of 131131955 in words is "one hundred thirty-one million, one hundred thirty-one thousand, nine hundred fifty-five".