131445004 has 12 divisors (see below), whose sum is σ = 230109544. Its totient is φ = 65699424.

The previous prime is 131444987. The next prime is 131445011. The reversal of 131445004 is 400544131.

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, 17239 + ... + 23665.

Almost surely, 2^131445004 is an apocalyptic number.

It is an amenable number.

131445004 is a deficient number, since it is larger than the sum of its proper divisors (98664540).

131445004 is a wasteful number, since it uses less digits than its factorization.

131445004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11544 (or 11542 counting only the distinct ones).

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

The square root of 131445004 is about 11464.9467508576. The cubic root of 131445004 is about 508.4497381245.

Adding to 131445004 its reverse (400544131), we get a palindrome (531989135).

The spelling of 131445004 in words is "one hundred thirty-one million, four hundred forty-five thousand, four".