131645124 has 72 divisors (see below), whose sum is σ = 361979072. Its totient is φ = 40098240.

The previous prime is 131645099. The next prime is 131645131. The reversal of 131645124 is 421546131.

It is a happy number.

131645124 is a `hidden beast` number, since 1 + 3 + 1 + 645 + 12 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46839 + ... + 49569.

Almost surely, 2^131645124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131645124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180989536).

131645124 is an abundant number, since it is smaller than the sum of its proper divisors (230333948).

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

131645124 is a wasteful number, since it uses less digits than its factorization.

131645124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857 (or 2852 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 131645124 is about 11473.6709034206. The cubic root of 131645124 is about 508.7076390586.

It can be divided in two parts, 131645 and 124, that added together give a square (131769 = 363²).

The spelling of 131645124 in words is "one hundred thirty-one million, six hundred forty-five thousand, one hundred twenty-four".