13223743 has 10 divisors (see below), whose sum is σ = 14356624. Its totient is φ = 12180168.

The previous prime is 13223699. The next prime is 13223759. The reversal of 13223743 is 34732231.

It is a de Polignac number, because none of the positive numbers 2^k-13223743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223783) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28330 + ... + 28792.

Almost surely, 2^13223743 is an apocalyptic number.

13223743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13223743 is a deficient number, since it is larger than the sum of its proper divisors (1132881).

13223743 is an frugal number, since it uses more digits than its factorization.

13223743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 476 counting only the distinct ones).

The product of its digits is 3024, while the sum is 25.

The square root of 13223743 is about 3636.4464797382. The cubic root of 13223743 is about 236.4747636540.

Adding to 13223743 its reverse (34732231), we get a palindrome (47955974).

The spelling of 13223743 in words is "thirteen million, two hundred twenty-three thousand, seven hundred forty-three".