13225431 has 8 divisors (see below), whose sum is σ = 17655040. Its totient is φ = 8806392.

The previous prime is 13225427. The next prime is 13225447. The reversal of 13225431 is 13452231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13225431 - 2² = 13225427 is a prime.

It is a super-2 number, since 2×13225431² = 349824050271522, 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 = 13225398 and 13225407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13225451) 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, 996 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (2206880).

Almost surely, 2^13225431 is an apocalyptic number.

13225431 is a deficient number, since it is larger than the sum of its proper divisors (4429609).

13225431 is a wasteful number, since it uses less digits than its factorization.

13225431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285.

The product of its digits is 720, while the sum is 21.

The square root of 13225431 is about 3636.6785670444. The cubic root of 13225431 is about 236.4848251627.

Adding to 13225431 its reverse (13452231), we get a palindrome (26677662).

The spelling of 13225431 in words is "thirteen million, two hundred twenty-five thousand, four hundred thirty-one".