1223313311 has 4 divisors (see below), whose sum is σ = 1334523624. Its totient is φ = 1112103000.

The previous prime is 1223313281. The next prime is 1223313317. The reversal of 1223313311 is 1133133221.

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 1223313311 - 2²² = 1219119007 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 (1223313317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55605140 + ... + 55605161.

It is an arithmetic number, because the mean of its divisors is an integer number (333630906).

Almost surely, 2^1223313311 is an apocalyptic number.

1223313311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223313311 is a deficient number, since it is larger than the sum of its proper divisors (111210313).

1223313311 is a wasteful number, since it uses less digits than its factorization.

1223313311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111210312.

The product of its digits is 324, while the sum is 20.

The square root of 1223313311 is about 34975.8961429153. The cubic root of 1223313311 is about 1069.4961703461.

Adding to 1223313311 its reverse (1133133221), we get a palindrome (2356446532).

The spelling of 1223313311 in words is "one billion, two hundred twenty-three million, three hundred thirteen thousand, three hundred eleven".