13311943 has 2 divisors, whose sum is σ = 13311944. Its totient is φ = 13311942.

The previous prime is 13311937. The next prime is 13311973. The reversal of 13311943 is 34911331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13311943 - 2⁵ = 13311911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13311973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655971 + 6655972.

It is an arithmetic number, because the mean of its divisors is an integer number (6655972).

Almost surely, 2^13311943 is an apocalyptic number.

13311943 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311943 is an equidigital number, since it uses as much as digits as its factorization.

13311943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 13311943 is about 3648.5535490109. The cubic root of 13311943 is about 236.9993472063. Note that the first 3 decimals are identical.

The spelling of 13311943 in words is "thirteen million, three hundred eleven thousand, nine hundred forty-three".