1223653123 has 8 divisors (see below), whose sum is σ = 1525593600. Its totient is φ = 953495880.

The previous prime is 1223653117. The next prime is 1223653127. The reversal of 1223653123 is 3213563221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223653123 - 2²⁵ = 1190098691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223653091 and 1223653100.

It is not an unprimeable number, because it can be changed into a prime (1223653127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7945723 + ... + 7945876.

It is an arithmetic number, because the mean of its divisors is an integer number (190699200).

Almost surely, 2^1223653123 is an apocalyptic number.

1223653123 is a deficient number, since it is larger than the sum of its proper divisors (301940477).

1223653123 is a wasteful number, since it uses less digits than its factorization.

1223653123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15891617.

The product of its digits is 6480, while the sum is 28.

The square root of 1223653123 is about 34980.7536082343. The cubic root of 1223653123 is about 1069.5951894018.

The spelling of 1223653123 in words is "one billion, two hundred twenty-three million, six hundred fifty-three thousand, one hundred twenty-three".