13225231 has 4 divisors (see below), whose sum is σ = 13304592. Its totient is φ = 13145872.

The previous prime is 13225229. The next prime is 13225237. The reversal of 13225231 is 13252231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13252231 = 17 ⋅779543.

It is a cyclic number.

It is not a de Polignac number, because 13225231 - 2¹ = 13225229 is a prime.

It is a super-2 number, since 2×13225231² = 349813470006722, 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 = 13225199 and 13225208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13225237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39430 + ... + 39763.

It is an arithmetic number, because the mean of its divisors is an integer number (3326148).

Almost surely, 2^13225231 is an apocalyptic number.

13225231 is a deficient number, since it is larger than the sum of its proper divisors (79361).

13225231 is an equidigital number, since it uses as much as digits as its factorization.

13225231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79360.

The product of its digits is 360, while the sum is 19.

The square root of 13225231 is about 3636.6510693219. The cubic root of 13225231 is about 236.4836330855.

Adding to 13225231 its reverse (13252231), we get a palindrome (26477462).

Subtracting 13225231 from its reverse (13252231), we obtain a cube (27000 = 30³).

It can be divided in two parts, 13225 and 231, that added together give a square (13456 = 116²).

The spelling of 13225231 in words is "thirteen million, two hundred twenty-five thousand, two hundred thirty-one".