1223113313 has 4 divisors (see below), whose sum is σ = 1238595840. Its totient is φ = 1207630788.

The previous prime is 1223113303. The next prime is 1223113327. The reversal of 1223113313 is 3133113221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3133113221 = 7 ⋅447587603.

It is a cyclic number.

It is not a de Polignac number, because 1223113313 - 2⁶ = 1223113249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223113303) 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, 7741145 + ... + 7741302.

It is an arithmetic number, because the mean of its divisors is an integer number (309648960).

Almost surely, 2^1223113313 is an apocalyptic number.

It is an amenable number.

1223113313 is a deficient number, since it is larger than the sum of its proper divisors (15482527).

1223113313 is an equidigital number, since it uses as much as digits as its factorization.

1223113313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15482526.

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

The square root of 1223113313 is about 34973.0369427649. The cubic root of 1223113313 is about 1069.4378836284.

Adding to 1223113313 its reverse (3133113221), we get a palindrome (4356226534).

The spelling of 1223113313 in words is "one billion, two hundred twenty-three million, one hundred thirteen thousand, three hundred thirteen".