131885442 has 32 divisors (see below), whose sum is σ = 315624960. Its totient is φ = 40579920.

The previous prime is 131885437. The next prime is 131885443. The reversal of 131885442 is 244588131.

131885442 is a `hidden beast` number, since 1 + 31 + 88 + 544 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 131885397 and 131885406.

It is not an unprimeable number, because it can be changed into a prime (131885443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93234 + ... + 94637.

It is an arithmetic number, because the mean of its divisors is an integer number (9863280).

Almost surely, 2^131885442 is an apocalyptic number.

131885442 is an abundant number, since it is smaller than the sum of its proper divisors (183739518).

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

131885442 is a wasteful number, since it uses less digits than its factorization.

131885442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187895 (or 187889 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 131885442 is about 11484.1387138958. The cubic root of 131885442 is about 509.0169992637.

The spelling of 131885442 in words is "one hundred thirty-one million, eight hundred eighty-five thousand, four hundred forty-two".