1223313011 has 4 divisors (see below), whose sum is σ = 1223740800. Its totient is φ = 1222885224.

The previous prime is 1223312999. The next prime is 1223313019. The reversal of 1223313011 is 1103133221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1103133221 = 281 ⋅3925741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223313011 is a prime.

It is a super-2 number, since 2×1223313011² = 2992989445763772242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223313019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209576 + ... + 215333.

It is an arithmetic number, because the mean of its divisors is an integer number (305935200).

Almost surely, 2^1223313011 is an apocalyptic number.

1223313011 is a deficient number, since it is larger than the sum of its proper divisors (427789).

1223313011 is an equidigital number, since it uses as much as digits as its factorization.

1223313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427788.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1223313011 is about 34975.8918542473. The cubic root of 1223313011 is about 1069.4960829199.

Adding to 1223313011 its reverse (1103133221), we get a palindrome (2326446232).

It can be divided in two parts, 122 and 3313011, that added together give a palindrome (3313133).

The spelling of 1223313011 in words is "one billion, two hundred twenty-three million, three hundred thirteen thousand, eleven".