131310504 has 128 divisors (see below), whose sum is σ = 397555200. Its totient is φ = 39916800.

The previous prime is 131310503. The next prime is 131310523. The reversal of 131310504 is 405013131.

131310504 is a `hidden beast` number, since 131 + 31 + 0 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131310503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283377 + ... + 283839.

It is an arithmetic number, because the mean of its divisors is an integer number (3105900).

Almost surely, 2^131310504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131310504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198777600).

131310504 is an abundant number, since it is smaller than the sum of its proper divisors (266244696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131310504 is a wasteful number, since it uses less digits than its factorization.

131310504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131310504 is about 11459.0795441868. The cubic root of 131310504 is about 508.2762566272.

Adding to 131310504 its reverse (405013131), we get a palindrome (536323635).

The spelling of 131310504 in words is "one hundred thirty-one million, three hundred ten thousand, five hundred four".