1323111023 has 4 divisors (see below), whose sum is σ = 1424888808. Its totient is φ = 1221333240.

The previous prime is 1323111007. The next prime is 1323111073. The reversal of 1323111023 is 3201113231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201113231 = 52223 ⋅61297.

It is a cyclic number.

It is not a de Polignac number, because 1323111023 - 2⁴ = 1323111007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323110992 and 1323111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323111073) 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, 50888873 + ... + 50888898.

It is an arithmetic number, because the mean of its divisors is an integer number (356222202).

Almost surely, 2^1323111023 is an apocalyptic number.

1323111023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1323111023 is a deficient number, since it is larger than the sum of its proper divisors (101777785).

1323111023 is a wasteful number, since it uses less digits than its factorization.

1323111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101777784.

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

The square root of 1323111023 is about 36374.5930973805. The cubic root of 1323111023 is about 1097.8224201674.

Adding to 1323111023 its reverse (3201113231), we get a palindrome (4524224254).

The spelling of 1323111023 in words is "one billion, three hundred twenty-three million, one hundred eleven thousand, twenty-three".