13333913 has 4 divisors (see below), whose sum is σ = 13644048. Its totient is φ = 13023780.

The previous prime is 13333909. The next prime is 13333921. The reversal of 13333913 is 31933331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13333913 - 2² = 13333909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13333973) 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, 155003 + ... + 155088.

It is an arithmetic number, because the mean of its divisors is an integer number (3411012).

Almost surely, 2^13333913 is an apocalyptic number.

It is an amenable number.

13333913 is a deficient number, since it is larger than the sum of its proper divisors (310135).

13333913 is an equidigital number, since it uses as much as digits as its factorization.

13333913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310134.

The product of its digits is 2187, while the sum is 26.

The square root of 13333913 is about 3651.5630899657. The cubic root of 13333913 is about 237.1296566037.

The spelling of 13333913 in words is "thirteen million, three hundred thirty-three thousand, nine hundred thirteen".