1223320023 has 8 divisors (see below), whose sum is σ = 1812326000. Its totient is φ = 815546664.

The previous prime is 1223320019. The next prime is 1223320031. The reversal of 1223320023 is 3200233221.

It is a happy number.

It is not a de Polignac number, because 1223320023 - 2² = 1223320019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223319978 and 1223320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223320003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22654048 + ... + 22654101.

It is an arithmetic number, because the mean of its divisors is an integer number (226540750).

Almost surely, 2^1223320023 is an apocalyptic number.

1223320023 is a deficient number, since it is larger than the sum of its proper divisors (589005977).

1223320023 is an equidigital number, since it uses as much as digits as its factorization.

1223320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45308158 (or 45308152 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1223320023 is about 34975.9920945782. The cubic root of 1223320023 is about 1069.4981263577.

Adding to 1223320023 its reverse (3200233221), we get a palindrome (4423553244).

The spelling of 1223320023 in words is "one billion, two hundred twenty-three million, three hundred twenty thousand, twenty-three".