13333387 has 2 divisors, whose sum is σ = 13333388. Its totient is φ = 13333386.

The previous prime is 13333381. The next prime is 13333391. The reversal of 13333387 is 78333331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13333387 - 2⁷ = 13333259 is a prime.

It is not a weakly prime, because it can be changed into another prime (13333381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6666693 + 6666694.

It is an arithmetic number, because the mean of its divisors is an integer number (6666694).

Almost surely, 2^13333387 is an apocalyptic number.

13333387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333387 is an equidigital number, since it uses as much as digits as its factorization.

13333387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 31.

The square root of 13333387 is about 3651.4910653047. The cubic root of 13333387 is about 237.1265384433.

The spelling of 13333387 in words is "thirteen million, three hundred thirty-three thousand, three hundred eighty-seven".