131303444 has 24 divisors (see below), whose sum is σ = 243673920. Its totient is φ = 61694336.

The previous prime is 131303441. The next prime is 131303483. The reversal of 131303444 is 444303131.

It is a super-2 number, since 2×131303444² = 34481188812522272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131303441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63377 + ... + 65415.

It is an arithmetic number, because the mean of its divisors is an integer number (10153080).

Almost surely, 2^131303444 is an apocalyptic number.

It is an amenable number.

131303444 is a deficient number, since it is larger than the sum of its proper divisors (112370476).

131303444 is a wasteful number, since it uses less digits than its factorization.

131303444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131303444 is about 11458.7714873803. The cubic root of 131303444 is about 508.2671471892.

Adding to 131303444 its reverse (444303131), we get a palindrome (575606575).

The spelling of 131303444 in words is "one hundred thirty-one million, three hundred three thousand, four hundred forty-four".