131569442 has 16 divisors (see below), whose sum is σ = 201815712. Its totient is φ = 64314240.

The previous prime is 131569439. The next prime is 131569507. The reversal of 131569442 is 244965131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12017 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (12613482).

Almost surely, 2^131569442 is an apocalyptic number.

131569442 is a deficient number, since it is larger than the sum of its proper divisors (70246270).

131569442 is an equidigital number, since it uses as much as digits as its factorization.

131569442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8353.

The product of its digits is 25920, while the sum is 35.

The square root of 131569442 is about 11470.3723566413. The cubic root of 131569442 is about 508.6101360380.

The spelling of 131569442 in words is "one hundred thirty-one million, five hundred sixty-nine thousand, four hundred forty-two".