131505004 has 24 divisors (see below), whose sum is σ = 242751600. Its totient is φ = 62161920.

The previous prime is 131505001. The next prime is 131505037. The reversal of 131505004 is 400505131.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (131505001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41724 + ... + 44764.

It is an arithmetic number, because the mean of its divisors is an integer number (10114650).

Almost surely, 2^131505004 is an apocalyptic number.

It is an amenable number.

131505004 is a deficient number, since it is larger than the sum of its proper divisors (111246596).

131505004 is a wasteful number, since it uses less digits than its factorization.

131505004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633 (or 3631 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 131505004 is about 11467.5631238725. The cubic root of 131505004 is about 508.5270894698.

The spelling of 131505004 in words is "one hundred thirty-one million, five hundred five thousand, four".