11231311 has 16 divisors (see below), whose sum is σ = 13999104. Its totient is φ = 8773344.

The previous prime is 11231293. The next prime is 11231317. The reversal of 11231311 is 11313211.

11231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11231311 - 2⁹ = 11230799 is a prime.

It is a super-2 number, since 2×11231311² = 252284693557442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 11231291 and 11231300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6810 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (874944).

Almost surely, 2^11231311 is an apocalyptic number.

11231311 is a deficient number, since it is larger than the sum of its proper divisors (2767793).

11231311 is a wasteful number, since it uses less digits than its factorization.

11231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 18, while the sum is 13.

The square root of 11231311 is about 3351.3148166056. The cubic root of 11231311 is about 223.9460900772.

Adding to 11231311 its reverse (11313211), we get a palindrome (22544522).

The spelling of 11231311 in words is "eleven million, two hundred thirty-one thousand, three hundred eleven".