131000504 has 16 divisors (see below), whose sum is σ = 260074800. Its totient is φ = 61647232.

The previous prime is 131000491. The next prime is 131000509. The reversal of 131000504 is 405000131.

It is a super-2 number, since 2×131000504² = 34322264096508032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000509) 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, 481484 + ... + 481755.

It is an arithmetic number, because the mean of its divisors is an integer number (16254675).

Almost surely, 2^131000504 is an apocalyptic number.

It is an amenable number.

131000504 is a deficient number, since it is larger than the sum of its proper divisors (129074296).

131000504 is a wasteful number, since it uses less digits than its factorization.

131000504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963262 (or 963258 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 131000504 is about 11445.5451595806. The cubic root of 131000504 is about 507.8759591334.

Adding to 131000504 its reverse (405000131), we get a palindrome (536000635).

The spelling of 131000504 in words is "one hundred thirty-one million, five hundred four", and thus it is an aban number.