1223133311 has 16 divisors (see below), whose sum is σ = 1278249984. Its totient is φ = 1169429664.

The previous prime is 1223133299. The next prime is 1223133347. The reversal of 1223133311 is 1133313221.

It is a cyclic number.

It is not a de Polignac number, because 1223133311 - 2²⁶ = 1156024447 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 (1223133011) 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 15 ways as a sum of consecutive naturals, for example, 654200 + ... + 656066.

It is an arithmetic number, because the mean of its divisors is an integer number (79890624).

Almost surely, 2^1223133311 is an apocalyptic number.

1223133311 is a deficient number, since it is larger than the sum of its proper divisors (55116673).

1223133311 is a wasteful number, since it uses less digits than its factorization.

1223133311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230.

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

The square root of 1223133311 is about 34973.3228475648. The cubic root of 1223133311 is about 1069.4437120615.

Adding to 1223133311 its reverse (1133313221), we get a palindrome (2356446532).

The spelling of 1223133311 in words is "one billion, two hundred twenty-three million, one hundred thirty-three thousand, three hundred eleven".