131255663 has 12 divisors (see below), whose sum is σ = 166566312. Its totient is φ = 102276720.

The previous prime is 131255639. The next prime is 131255669. The reversal of 131255663 is 366552131.

It is not a de Polignac number, because 131255663 - 2¹⁸ = 130993519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131255669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121220 + ... + 122297.

It is an arithmetic number, because the mean of its divisors is an integer number (13880526).

Almost surely, 2^131255663 is an apocalyptic number.

131255663 is a deficient number, since it is larger than the sum of its proper divisors (35310649).

131255663 is a wasteful number, since it uses less digits than its factorization.

131255663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243542 (or 243535 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 131255663 is about 11456.6863883062. The cubic root of 131255663 is about 508.2054873214.

The spelling of 131255663 in words is "one hundred thirty-one million, two hundred fifty-five thousand, six hundred sixty-three".