12311311 has 2 divisors, whose sum is σ = 12311312. Its totient is φ = 12311310.

The previous prime is 12311267. The next prime is 12311333. The reversal of 12311311 is 11311321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12311311 - 2¹⁵ = 12278543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12311291 and 12311300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155655 + 6155656.

It is an arithmetic number, because the mean of its divisors is an integer number (6155656).

Almost surely, 2^12311311 is an apocalyptic number.

12311311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311311 is an equidigital number, since it uses as much as digits as its factorization.

12311311 is an evil number, because the sum of its binary digits is even.

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

The square root of 12311311 is about 3508.7477823292. The cubic root of 12311311 is about 230.9057604258.

Adding to 12311311 its reverse (11311321), we get a palindrome (23622632).

The spelling of 12311311 in words is "twelve million, three hundred eleven thousand, three hundred eleven".