131225160 has 128 divisors (see below), whose sum is σ = 434678400. Its totient is φ = 31426560.

The previous prime is 131225147. The next prime is 131225161. The reversal of 131225160 is 61522131.

It is not an unprimeable number, because it can be changed into a prime (131225161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116922 + ... + 118038.

It is an arithmetic number, because the mean of its divisors is an integer number (3395925).

Almost surely, 2^131225160 is an apocalyptic number.

131225160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131225160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217339200).

131225160 is an abundant number, since it is smaller than the sum of its proper divisors (303453240).

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

131225160 is a wasteful number, since it uses less digits than its factorization.

131225160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 131225160 is about 11455.3550796123. The cubic root of 131225160 is about 508.1661163396.

Adding to 131225160 its reverse (61522131), we get a palindrome (192747291).

The spelling of 131225160 in words is "one hundred thirty-one million, two hundred twenty-five thousand, one hundred sixty".