13313444 has 12 divisors (see below), whose sum is σ = 23539404. Its totient is φ = 6587904.

The previous prime is 13313429. The next prime is 13313453. The reversal of 13313444 is 44431331.

It can be written as a sum of positive squares in 2 ways, for example, as 4972900 + 8340544 = 2230^2 + 2888^2 .

It is a super-2 number, since 2×13313444² = 354495582282272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16769 + ... + 17544.

It is an arithmetic number, because the mean of its divisors is an integer number (1961617).

Almost surely, 2^13313444 is an apocalyptic number.

It is an amenable number.

13313444 is a deficient number, since it is larger than the sum of its proper divisors (10225960).

13313444 is a wasteful number, since it uses less digits than its factorization.

13313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414 (or 34412 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 13313444 is about 3648.7592411668. The cubic root of 13313444 is about 237.0082545624.

Adding to 13313444 its reverse (44431331), we get a palindrome (57744775).

The spelling of 13313444 in words is "thirteen million, three hundred thirteen thousand, four hundred forty-four".