11311399 has 4 divisors (see below), whose sum is σ = 12339720. Its totient is φ = 10283080.

The previous prime is 11311397. The next prime is 11311453. The reversal of 11311399 is 99311311.

11311399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11311399 - 2¹ = 11311397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311397) 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, 514144 + ... + 514165.

It is an arithmetic number, because the mean of its divisors is an integer number (3084930).

Almost surely, 2^11311399 is an apocalyptic number.

11311399 is a deficient number, since it is larger than the sum of its proper divisors (1028321).

11311399 is a wasteful number, since it uses less digits than its factorization.

11311399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028320.

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

The square root of 11311399 is about 3363.2423344148. The cubic root of 11311399 is about 224.4771332010.

The spelling of 11311399 in words is "eleven million, three hundred eleven thousand, three hundred ninety-nine".