11311939 has 2 divisors, whose sum is σ = 11311940. Its totient is φ = 11311938.

The previous prime is 11311907. The next prime is 11311961. The reversal of 11311939 is 93911311.

11311939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11311939 - 2⁵ = 11311907 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655969 + 5655970.

It is an arithmetic number, because the mean of its divisors is an integer number (5655970).

Almost surely, 2^11311939 is an apocalyptic number.

11311939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311939 is an equidigital number, since it uses as much as digits as its factorization.

11311939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729, while the sum is 28.

The square root of 11311939 is about 3363.3226131312. The cubic root of 11311939 is about 224.4807052827.

The spelling of 11311939 in words is "eleven million, three hundred eleven thousand, nine hundred thirty-nine".