13303623 has 4 divisors (see below), whose sum is σ = 17738168. Its totient is φ = 8869080.

The previous prime is 13303621. The next prime is 13303643. The reversal of 13303623 is 32630331.

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

It is not a de Polignac number, because 13303623 - 2¹ = 13303621 is a prime.

It is a super-2 number, since 2×13303623² = 353972769852258, which contains 22 as substring.

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 13303623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13303621) 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, 2217268 + ... + 2217273.

It is an arithmetic number, because the mean of its divisors is an integer number (4434542).

Almost surely, 2^13303623 is an apocalyptic number.

13303623 is a deficient number, since it is larger than the sum of its proper divisors (4434545).

13303623 is an equidigital number, since it uses as much as digits as its factorization.

13303623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434544.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 13303623 is about 3647.4131929355. The cubic root of 13303623 is about 236.9499618408.

Adding to 13303623 its reverse (32630331), we get a palindrome (45933954).

The spelling of 13303623 in words is "thirteen million, three hundred three thousand, six hundred twenty-three".