131130825 has 48 divisors (see below), whose sum is σ = 250329216. Its totient is φ = 59328000.

The previous prime is 131130821. The next prime is 131130841. The reversal of 131130825 is 528031131.

It is not a de Polignac number, because 131130825 - 2² = 131130821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131130795 and 131130804.

It is not an unprimeable number, because it can be changed into a prime (131130821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51789 + ... + 54261.

It is an arithmetic number, because the mean of its divisors is an integer number (5215192).

Almost surely, 2^131130825 is an apocalyptic number.

131130825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131130825 is a deficient number, since it is larger than the sum of its proper divisors (119198391).

131130825 is a wasteful number, since it uses less digits than its factorization.

131130825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 131130825 is about 11451.2368327618. The cubic root of 131130825 is about 508.0443171807.

Adding to 131130825 its reverse (528031131), we get a palindrome (659161956).

The spelling of 131130825 in words is "one hundred thirty-one million, one hundred thirty thousand, eight hundred twenty-five".