13125331 has 4 divisors (see below), whose sum is σ = 13132912. Its totient is φ = 13117752.

The previous prime is 13125319. The next prime is 13125347. The reversal of 13125331 is 13352131.

13125331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13125331 - 2⁹ = 13124819 is a prime.

It is a super-2 number, since 2×13125331² = 344548627719122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13125299 and 13125308.

It is not an unprimeable number, because it can be changed into a prime (13125311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (3283228).

Almost surely, 2^13125331 is an apocalyptic number.

13125331 is a deficient number, since it is larger than the sum of its proper divisors (7581).

13125331 is an equidigital number, since it uses as much as digits as its factorization.

13125331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580.

The product of its digits is 270, while the sum is 19.

The square root of 13125331 is about 3622.8898685994. The cubic root of 13125331 is about 235.8866819283.

Adding to 13125331 its reverse (13352131), we get a palindrome (26477462).

It can be divided in two parts, 13125 and 331, that added together give a square (13456 = 116²).

The spelling of 13125331 in words is "thirteen million, one hundred twenty-five thousand, three hundred thirty-one".