131331042 has 48 divisors (see below), whose sum is σ = 289049280. Its totient is φ = 43092000.

The previous prime is 131331029. The next prime is 131331061. The reversal of 131331042 is 240133131.

131331042 is a `hidden beast` number, since 1 + 313 + 310 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 573384 + ... + 573612.

It is an arithmetic number, because the mean of its divisors is an integer number (6021860).

Almost surely, 2^131331042 is an apocalyptic number.

131331042 is an abundant number, since it is smaller than the sum of its proper divisors (157718238).

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

131331042 is a wasteful number, since it uses less digits than its factorization.

131331042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131331042 is about 11459.9756544244. The cubic root of 131331042 is about 508.3027547195.

Adding to 131331042 its reverse (240133131), we get a palindrome (371464173).

The spelling of 131331042 in words is "one hundred thirty-one million, three hundred thirty-one thousand, forty-two".