13226331 has 4 divisors (see below), whose sum is σ = 17635112. Its totient is φ = 8817552.

The previous prime is 13226329. The next prime is 13226351. The reversal of 13226331 is 13362231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13362231 = 3 ⋅4454077.

It is not a de Polignac number, because 13226331 - 2¹ = 13226329 is a prime.

It is a super-2 number, since 2×13226331² = 349871663443122, 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 = 13226298 and 13226307.

It is not an unprimeable number, because it can be changed into a prime (13226351) 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, 2204386 + ... + 2204391.

It is an arithmetic number, because the mean of its divisors is an integer number (4408778).

Almost surely, 2^13226331 is an apocalyptic number.

13226331 is a deficient number, since it is larger than the sum of its proper divisors (4408781).

13226331 is an equidigital number, since it uses as much as digits as its factorization.

13226331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408780.

The product of its digits is 648, while the sum is 21.

The square root of 13226331 is about 3636.8023042228. The cubic root of 13226331 is about 236.4901893613.

Adding to 13226331 its reverse (13362231), we get a palindrome (26588562).

The spelling of 13226331 in words is "thirteen million, two hundred twenty-six thousand, three hundred thirty-one".