131225013 has 12 divisors (see below), whose sum is σ = 189733440. Its totient is φ = 87397416.

The previous prime is 131225011. The next prime is 131225041. The reversal of 131225013 is 310522131.

It is not a de Polignac number, because 131225013 - 2¹ = 131225011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131225011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3318 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (15811120).

Almost surely, 2^131225013 is an apocalyptic number.

It is an amenable number.

131225013 is a deficient number, since it is larger than the sum of its proper divisors (58508427).

131225013 is a wasteful number, since it uses less digits than its factorization.

131225013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14328 (or 14325 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131225013 is about 11455.3486633974. The cubic root of 131225013 is about 508.1659265883.

Adding to 131225013 its reverse (310522131), we get a palindrome (441747144).

The spelling of 131225013 in words is "one hundred thirty-one million, two hundred twenty-five thousand, thirteen".