131225316 has 24 divisors (see below), whose sum is σ = 312708480. Its totient is φ = 42810912.

The previous prime is 131225309. The next prime is 131225317. The reversal of 131225316 is 613522131.

It is not an unprimeable number, because it can be changed into a prime (131225317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115771 + ... + 116898.

It is an arithmetic number, because the mean of its divisors is an integer number (13029520).

Almost surely, 2^131225316 is an apocalyptic number.

It is an amenable number.

131225316 is an abundant number, since it is smaller than the sum of its proper divisors (181483164).

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

131225316 is a wasteful number, since it uses less digits than its factorization.

131225316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232723 (or 232721 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 131225316 is about 11455.3618886528. The cubic root of 131225316 is about 508.1663177082.

Adding to 131225316 its reverse (613522131), we get a palindrome (744747447).

The spelling of 131225316 in words is "one hundred thirty-one million, two hundred twenty-five thousand, three hundred sixteen".