113131325 has 6 divisors (see below), whose sum is σ = 140282874. Its totient is φ = 90505040.

The previous prime is 113131321. The next prime is 113131331. The reversal of 113131325 is 523131311.

It can be written as a sum of positive squares in 3 ways, for example, as 11303044 + 101828281 = 3362^2 + 10091^2 .

It is not a de Polignac number, because 113131325 - 2² = 113131321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113131297 and 113131306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113131321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2262602 + ... + 2262651.

It is an arithmetic number, because the mean of its divisors is an integer number (23380479).

Almost surely, 2^113131325 is an apocalyptic number.

It is an amenable number.

113131325 is a deficient number, since it is larger than the sum of its proper divisors (27151549).

113131325 is an equidigital number, since it uses as much as digits as its factorization.

113131325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4525263 (or 4525258 counting only the distinct ones).

The product of its digits is 270, while the sum is 20.

The square root of 113131325 is about 10636.3210274982. The cubic root of 113131325 is about 483.6460270150.

Adding to 113131325 its reverse (523131311), we get a palindrome (636262636).

The spelling of 113131325 in words is "one hundred thirteen million, one hundred thirty-one thousand, three hundred twenty-five".