1223103311 has 4 divisors (see below), whose sum is σ = 1223382192. Its totient is φ = 1222824432.

The previous prime is 1223103289. The next prime is 1223103317. The reversal of 1223103311 is 1133013221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133013221 = 1867 ⋅606863.

It is a cyclic number.

It is not a de Polignac number, because 1223103311 - 2¹⁸ = 1222841167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223103311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223103317) 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, 132755 + ... + 141668.

It is an arithmetic number, because the mean of its divisors is an integer number (305845548).

Almost surely, 2^1223103311 is an apocalyptic number.

1223103311 is a deficient number, since it is larger than the sum of its proper divisors (278881).

1223103311 is an equidigital number, since it uses as much as digits as its factorization.

1223103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278880.

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

The square root of 1223103311 is about 34972.8939465981. The cubic root of 1223103311 is about 1069.4349685137.

Adding to 1223103311 its reverse (1133013221), we get a palindrome (2356116532).

The spelling of 1223103311 in words is "one billion, two hundred twenty-three million, one hundred three thousand, three hundred eleven".