131225116 has 24 divisors (see below), whose sum is σ = 259161840. Its totient is φ = 57590400.

The previous prime is 131225113. The next prime is 131225117. The reversal of 131225116 is 611522131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131225113) 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, 50145 + ... + 52696.

It is an arithmetic number, because the mean of its divisors is an integer number (10798410).

Almost surely, 2^131225116 is an apocalyptic number.

It is an amenable number.

131225116 is a deficient number, since it is larger than the sum of its proper divisors (127936724).

131225116 is a wasteful number, since it uses less digits than its factorization.

131225116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102885 (or 102883 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 131225116 is about 11455.3531591130. The cubic root of 131225116 is about 508.1660595433.

Adding to 131225116 its reverse (611522131), we get a palindrome (742747247).

The spelling of 131225116 in words is "one hundred thirty-one million, two hundred twenty-five thousand, one hundred sixteen".