131281655 has 4 divisors (see below), whose sum is σ = 157537992. Its totient is φ = 105025320.

The previous prime is 131281613. The next prime is 131281679. The reversal of 131281655 is 556182131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131281655 - 2⁸ = 131281399 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 3 ways as a sum of consecutive naturals, for example, 13128161 + ... + 13128170.

It is an arithmetic number, because the mean of its divisors is an integer number (39384498).

Almost surely, 2^131281655 is an apocalyptic number.

131281655 is a deficient number, since it is larger than the sum of its proper divisors (26256337).

131281655 is an equidigital number, since it uses as much as digits as its factorization.

131281655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26256336.

The product of its digits is 7200, while the sum is 32.

The square root of 131281655 is about 11457.8206915626. The cubic root of 131281655 is about 508.2390310302.

The spelling of 131281655 in words is "one hundred thirty-one million, two hundred eighty-one thousand, six hundred fifty-five".