13323123209 has 16 divisors (see below), whose sum is σ = 15312024000. Its totient is φ = 11464902720.

The previous prime is 13323123197. The next prime is 13323123223. The reversal of 13323123209 is 90232132331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13323123209 is a prime.

It is a super-2 number, since 2×13323123209² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13323123299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230927 + ... + 282795.

It is an arithmetic number, because the mean of its divisors is an integer number (957001500).

Almost surely, 2^13323123209 is an apocalyptic number.

13323123209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13323123209 is a deficient number, since it is larger than the sum of its proper divisors (1988900791).

13323123209 is a wasteful number, since it uses less digits than its factorization.

13323123209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53128.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 13323123209 in words is "thirteen billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred nine".