131312042 has 8 divisors (see below), whose sum is σ = 198472032. Its totient is φ = 65154700.

The previous prime is 131312033. The next prime is 131312047. The reversal of 131312042 is 240213131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131312042.

It is not an unprimeable number, because it can be changed into a prime (131312047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250334 + ... + 250857.

It is an arithmetic number, because the mean of its divisors is an integer number (24809004).

Almost surely, 2^131312042 is an apocalyptic number.

131312042 is a deficient number, since it is larger than the sum of its proper divisors (67159990).

131312042 is a wasteful number, since it uses less digits than its factorization.

131312042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501324.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131312042 is about 11459.1466523472. The cubic root of 131312042 is about 508.2782410478.

Adding to 131312042 its reverse (240213131), we get a palindrome (371525173).

The spelling of 131312042 in words is "one hundred thirty-one million, three hundred twelve thousand, forty-two".