1203321001323 has 8 divisors (see below), whose sum is σ = 1833632002048. Its totient is φ = 687612000744.

The previous prime is 1203321001303. The next prime is 1203321001367. The reversal of 1203321001323 is 3231001233021.

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

It is not a de Polignac number, because 1203321001323 - 2⁵ = 1203321001291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 57301000063 = 1203321001323 / (1 + 2 + 0 + 3 + 3 + 2 + 1 + 0 + 0 + 1 + 3 + 2 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 1203321001323.

It is not an unprimeable number, because it can be changed into a prime (1203321001303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28650500011 + ... + 28650500052.

It is an arithmetic number, because the mean of its divisors is an integer number (229204000256).

Almost surely, 2^{1203321001323} is an apocalyptic number.

1203321001323 is a deficient number, since it is larger than the sum of its proper divisors (630311000725).

1203321001323 is an equidigital number, since it uses as much as digits as its factorization.

1203321001323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57301000073.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1203321001323 its reverse (3231001233021), we get a palindrome (4434322234344).

The spelling of 1203321001323 in words is "one trillion, two hundred three billion, three hundred twenty-one million, one thousand, three hundred twenty-three".