13421233 has 16 divisors (see below), whose sum is σ = 15990784. Its totient is φ = 11022480.

The previous prime is 13421207. The next prime is 13421251. The reversal of 13421233 is 33212431.

13421233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13421233 is a prime.

It is the 3664-th Hogben number.

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 13421233.

It is not an unprimeable number, because it can be changed into a prime (13421533) by changing a digit.

It is a nontrivial repunit in base 3663.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27316 + ... + 27802.

It is an arithmetic number, because the mean of its divisors is an integer number (999424).

Almost surely, 2^13421233 is an apocalyptic number.

It is an amenable number.

13421233 is a deficient number, since it is larger than the sum of its proper divisors (2569551).

13421233 is a wasteful number, since it uses less digits than its factorization.

13421233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

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

The square root of 13421233 is about 3663.5001023611. The cubic root of 13421233 is about 237.6461622926.

Adding to 13421233 its reverse (33212431), we get a palindrome (46633664).

The spelling of 13421233 in words is "thirteen million, four hundred twenty-one thousand, two hundred thirty-three".