1323231201023 has 4 divisors (see below), whose sum is σ = 1323773289168. Its totient is φ = 1322689112880.

The previous prime is 1323231201013. The next prime is 1323231201101. The reversal of 1323231201023 is 3201021323231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323231201023 - 2⁶ = 1323231200959 is a prime.

It is a super-2 number, since 2×1323231201023² (a number of 25 digits) contains 22 as substring.

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 1323231201023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323231201013) 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, 271040411 + ... + 271045292.

It is an arithmetic number, because the mean of its divisors is an integer number (330943322292).

Almost surely, 2^{1323231201023} is an apocalyptic number.

1323231201023 is a deficient number, since it is larger than the sum of its proper divisors (542088145).

1323231201023 is an equidigital number, since it uses as much as digits as its factorization.

1323231201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542088144.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1323231201023 its reverse (3201021323231), we get a palindrome (4524252524254).

The spelling of 1323231201023 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-one million, two hundred one thousand, twenty-three".