1311223 has 2 divisors, whose sum is σ = 1311224. Its totient is φ = 1311222.

The previous prime is 1311217. The next prime is 1311229. The reversal of 1311223 is 3221131.

It is a balanced prime because it is at equal distance from previous prime (1311217) and next prime (1311229).

It is a cyclic number.

It is not a de Polignac number, because 1311223 - 2¹³ = 1303031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655611 + 655612.

It is an arithmetic number, because the mean of its divisors is an integer number (655612).

2^1311223 is an apocalyptic number.

1311223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311223 is an equidigital number, since it uses as much as digits as its factorization.

1311223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 13.

The square root of 1311223 is about 1145.0864596178. The cubic root of 1311223 is about 109.4524581117.

Adding to 1311223 its reverse (3221131), we get a palindrome (4532354).

It can be divided in two parts, 13 and 11223, that added together give a square (11236 = 106²).

The spelling of 1311223 in words is "one million, three hundred eleven thousand, two hundred twenty-three".