131525130 has 64 divisors (see below), whose sum is σ = 352791936. Its totient is φ = 31104000.

The previous prime is 131525071. The next prime is 131525143. The reversal of 131525130 is 31525131.

It is a junction number, because it is equal to n+sod(n) for n = 131525097 and 131525106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8670 + ... + 18390.

It is an arithmetic number, because the mean of its divisors is an integer number (5512374).

Almost surely, 2^131525130 is an apocalyptic number.

131525130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131525130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176395968).

131525130 is an abundant number, since it is smaller than the sum of its proper divisors (221266806).

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

131525130 is a wasteful number, since it uses less digits than its factorization.

131525130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9783.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131525130 is about 11468.4406089058. The cubic root of 131525130 is about 508.5530304197.

Subtracting from 131525130 its reverse (31525131), we obtain a palindrome (99999999).

The spelling of 131525130 in words is "one hundred thirty-one million, five hundred twenty-five thousand, one hundred thirty".