13309823 has 8 divisors (see below), whose sum is σ = 14044800. Its totient is φ = 12578328.

The previous prime is 13309817. The next prime is 13309853. The reversal of 13309823 is 32890331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13309823 - 2⁸ = 13309567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13309853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11990 + ... + 13052.

It is an arithmetic number, because the mean of its divisors is an integer number (1755600).

Almost surely, 2^13309823 is an apocalyptic number.

13309823 is a deficient number, since it is larger than the sum of its proper divisors (734977).

13309823 is a wasteful number, since it uses less digits than its factorization.

13309823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 13309823 is about 3648.2630113521. The cubic root of 13309823 is about 236.9867653894.

The spelling of 13309823 in words is "thirteen million, three hundred nine thousand, eight hundred twenty-three".