131544004 has 12 divisors (see below), whose sum is σ = 230594364. Its totient is φ = 65659904.

The previous prime is 131544001. The next prime is 131544013. The reversal of 131544004 is 400445131.

It can be written as a sum of positive squares in 2 ways, for example, as 26522500 + 105021504 = 5150^2 + 10248^2 .

It is not an unprimeable number, because it can be changed into a prime (131544001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25357 + ... + 30100.

It is an arithmetic number, because the mean of its divisors is an integer number (19216197).

Almost surely, 2^131544004 is an apocalyptic number.

It is an amenable number.

131544004 is a deficient number, since it is larger than the sum of its proper divisors (99050360).

131544004 is a wasteful number, since it uses less digits than its factorization.

131544004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56054 (or 56052 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 131544004 is about 11469.2634462724. The cubic root of 131544004 is about 508.5773552282.

Adding to 131544004 its reverse (400445131), we get a palindrome (531989135).

The spelling of 131544004 in words is "one hundred thirty-one million, five hundred forty-four thousand, four".