131573442 has 128 divisors (see below), whose sum is σ = 372234240. Its totient is φ = 29859840.

The previous prime is 131573441. The next prime is 131573459. The reversal of 131573442 is 244375131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131573441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113538 + ... + 114690.

It is an arithmetic number, because the mean of its divisors is an integer number (2908080).

Almost surely, 2^131573442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131573442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186117120).

131573442 is an abundant number, since it is smaller than the sum of its proper divisors (240660798).

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

131573442 is a wasteful number, since it uses less digits than its factorization.

131573442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208.

The product of its digits is 10080, while the sum is 30.

The square root of 131573442 is about 11470.5467175719. The cubic root of 131573442 is about 508.6152902741.

The spelling of 131573442 in words is "one hundred thirty-one million, five hundred seventy-three thousand, four hundred forty-two".