1323204023231 has 4 divisors (see below), whose sum is σ = 1368831748200. Its totient is φ = 1277576298264.

The previous prime is 1323204023179. The next prime is 1323204023249.

It is a happy number.

1323204023231 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323204023231 is a prime.

It is a super-2 number, since 2×1323204023231² (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 1323204023231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323204023731) 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, 22813862441 + ... + 22813862498.

It is an arithmetic number, because the mean of its divisors is an integer number (342207937050).

Almost surely, 2^{1323204023231} is an apocalyptic number.

1323204023231 is a deficient number, since it is larger than the sum of its proper divisors (45627724969).

1323204023231 is an equidigital number, since it uses as much as digits as its factorization.

1323204023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45627724968.

The product of its (nonzero) digits is 5184, while the sum is 26.

The spelling of 1323204023231 in words is "one trillion, three hundred twenty-three billion, two hundred four million, twenty-three thousand, two hundred thirty-one".