131263951 has 48 divisors (see below), whose sum is σ = 177945600. Its totient is φ = 94011840.

The previous prime is 131263933. The next prime is 131263963. The reversal of 131263951 is 159362131.

It is a happy number.

It is not a de Polignac number, because 131263951 - 2⁷ = 131263823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

Its product of digits (4860) is a multiple of the sum of its prime factors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131263981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1661530 + ... + 1661608.

It is an arithmetic number, because the mean of its divisors is an integer number (3707200).

Almost surely, 2^131263951 is an apocalyptic number.

131263951 is a deficient number, since it is larger than the sum of its proper divisors (46681649).

131263951 is a wasteful number, since it uses less digits than its factorization.

131263951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 149 counting only the distinct ones).

The product of its digits is 4860, while the sum is 31.

The square root of 131263951 is about 11457.0480927680. The cubic root of 131263951 is about 508.2161837956.

The spelling of 131263951 in words is "one hundred thirty-one million, two hundred sixty-three thousand, nine hundred fifty-one".