13226831 has 4 divisors (see below), whose sum is σ = 13923000. Its totient is φ = 12530664.

The previous prime is 13226827. The next prime is 13226861. The reversal of 13226831 is 13862231.

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 13226831 - 2² = 13226827 is a prime.

It is a super-3 number, since 3×13226831³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13226831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13226821) 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, 348056 + ... + 348093.

It is an arithmetic number, because the mean of its divisors is an integer number (3480750).

Almost surely, 2^13226831 is an apocalyptic number.

13226831 is a deficient number, since it is larger than the sum of its proper divisors (696169).

13226831 is an equidigital number, since it uses as much as digits as its factorization.

13226831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696168.

The product of its digits is 1728, while the sum is 26.

The square root of 13226831 is about 3636.8710452805. The cubic root of 13226831 is about 236.4931693665.

The spelling of 13226831 in words is "thirteen million, two hundred twenty-six thousand, eight hundred thirty-one".