1323111320023 has 4 divisors (see below), whose sum is σ = 1328142161808. Its totient is φ = 1318080478240.

The previous prime is 1323111320017. The next prime is 1323111320029. The reversal of 1323111320023 is 3200231113231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1323111320017) and next prime (1323111320029).

It is a cyclic number.

It is not a de Polignac number, because 1323111320023 - 2¹³ = 1323111311831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323111319976 and 1323111320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323111320029) 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, 2515420498 + ... + 2515421023.

It is an arithmetic number, because the mean of its divisors is an integer number (332035540452).

Almost surely, 2^{1323111320023} is an apocalyptic number.

1323111320023 is a deficient number, since it is larger than the sum of its proper divisors (5030841785).

1323111320023 is an equidigital number, since it uses as much as digits as its factorization.

1323111320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030841784.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1323111320023 its reverse (3200231113231), we get a palindrome (4523342433254).

The spelling of 1323111320023 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, three hundred twenty thousand, twenty-three".