13304431 has 24 divisors (see below), whose sum is σ = 16251840. Its totient is φ = 10850112.

The previous prime is 13304429. The next prime is 13304443. The reversal of 13304431 is 13440331.

13304431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13304431 - 2¹ = 13304429 is a prime.

It is a super-2 number, since 2×13304431² = 354015768467522, 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 = 13304399 and 13304408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13304411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122005 + ... + 122113.

It is an arithmetic number, because the mean of its divisors is an integer number (677160).

Almost surely, 2^13304431 is an apocalyptic number.

13304431 is a deficient number, since it is larger than the sum of its proper divisors (2947409).

13304431 is a wasteful number, since it uses less digits than its factorization.

13304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13304431 is about 3647.5239546849. The cubic root of 13304431 is about 236.9547588221.

Adding to 13304431 its reverse (13440331), we get a palindrome (26744762).

The spelling of 13304431 in words is "thirteen million, three hundred four thousand, four hundred thirty-one".