131232442 has 16 divisors (see below), whose sum is σ = 215101152. Its totient is φ = 59551920.

The previous prime is 131232433. The next prime is 131232467. The reversal of 131232442 is 244232131.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 9508 + ... + 18784.

It is an arithmetic number, because the mean of its divisors is an integer number (13443822).

Almost surely, 2^131232442 is an apocalyptic number.

131232442 is a deficient number, since it is larger than the sum of its proper divisors (83868710).

131232442 is a wasteful number, since it uses less digits than its factorization.

131232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9933.

The product of its digits is 1152, while the sum is 22.

The square root of 131232442 is about 11455.6729178167. The cubic root of 131232442 is about 508.1755159527.

Adding to 131232442 its reverse (244232131), we get a palindrome (375464573).

The spelling of 131232442 in words is "one hundred thirty-one million, two hundred thirty-two thousand, four hundred forty-two".