131132444 has 12 divisors (see below), whose sum is σ = 234364704. Its totient is φ = 64171104.

The previous prime is 131132437. The next prime is 131132483. The reversal of 131132444 is 444231131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348569 + ... + 348944.

It is an arithmetic number, because the mean of its divisors is an integer number (19530392).

Almost surely, 2^131132444 is an apocalyptic number.

It is an amenable number.

131132444 is a deficient number, since it is larger than the sum of its proper divisors (103232260).

131132444 is a wasteful number, since it uses less digits than its factorization.

131132444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697564 (or 697562 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 131132444 is about 11451.3075235975. The cubic root of 131132444 is about 508.0464080198.

Adding to 131132444 its reverse (444231131), we get a palindrome (575363575).

The spelling of 131132444 in words is "one hundred thirty-one million, one hundred thirty-two thousand, four hundred forty-four".