131252836 has 72 divisors (see below), whose sum is σ = 285919200. Its totient is φ = 52116480.

The previous prime is 131252827. The next prime is 131252837. The reversal of 131252836 is 638252131.

It is a junction number, because it is equal to n+sod(n) for n = 131252798 and 131252807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131252837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140820 + ... + 141748.

It is an arithmetic number, because the mean of its divisors is an integer number (3971100).

Almost surely, 2^131252836 is an apocalyptic number.

It is an amenable number.

131252836 is an abundant number, since it is smaller than the sum of its proper divisors (154666364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131252836 is a wasteful number, since it uses less digits than its factorization.

131252836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 974 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 131252836 is about 11456.5630099083. The cubic root of 131252836 is about 508.2018386986.

The spelling of 131252836 in words is "one hundred thirty-one million, two hundred fifty-two thousand, eight hundred thirty-six".