13224831 has 4 divisors (see below), whose sum is σ = 17633112. Its totient is φ = 8816552.

The previous prime is 13224829. The next prime is 13224859. The reversal of 13224831 is 13842231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13224831 - 2¹ = 13224829 is a prime.

It is a super-2 number, since 2×13224831² = 349792309957122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204136 + ... + 2204141.

It is an arithmetic number, because the mean of its divisors is an integer number (4408278).

Almost surely, 2^13224831 is an apocalyptic number.

13224831 is a deficient number, since it is larger than the sum of its proper divisors (4408281).

13224831 is an equidigital number, since it uses as much as digits as its factorization.

13224831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408280.

The product of its digits is 1152, while the sum is 24.

The square root of 13224831 is about 3636.5960732531. The cubic root of 13224831 is about 236.4812488951.

The spelling of 13224831 in words is "thirteen million, two hundred twenty-four thousand, eight hundred thirty-one".