1223503113 has 16 divisors (see below), whose sum is σ = 1882489856. Its totient is φ = 692355600.

The previous prime is 1223503051. The next prime is 1223503121. The reversal of 1223503113 is 3113053221.

It is not a de Polignac number, because 1223503113 - 2²⁵ = 1189948681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 1223503113.

It is not an unprimeable number, because it can be changed into a prime (1223503153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280663 + ... + 284988.

It is an arithmetic number, because the mean of its divisors is an integer number (117655616).

Almost surely, 2^1223503113 is an apocalyptic number.

It is an amenable number.

1223503113 is a deficient number, since it is larger than the sum of its proper divisors (658986743).

1223503113 is a wasteful number, since it uses less digits than its factorization.

1223503113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565764.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1223503113 is about 34978.6093634381. The cubic root of 1223503113 is about 1069.5514797022.

Adding to 1223503113 its reverse (3113053221), we get a palindrome (4336556334).

The spelling of 1223503113 in words is "one billion, two hundred twenty-three million, five hundred three thousand, one hundred thirteen".