1393318111 has 2 divisors, whose sum is σ = 1393318112. Its totient is φ = 1393318110.

The previous prime is 1393318109. The next prime is 1393318163. The reversal of 1393318111 is 1118133931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1393318111 - 2¹ = 1393318109 is a prime.

Together with 1393318109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393318711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696659055 + 696659056.

It is an arithmetic number, because the mean of its divisors is an integer number (696659056).

Almost surely, 2^1393318111 is an apocalyptic number.

1393318111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393318111 is an equidigital number, since it uses as much as digits as its factorization.

1393318111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 1393318111 is about 37327.1765741798. The cubic root of 1393318111 is about 1116.9063518266.

The spelling of 1393318111 in words is "one billion, three hundred ninety-three million, three hundred eighteen thousand, one hundred eleven".