1321203332323 has 16 divisors (see below), whose sum is σ = 1558712356864. Its totient is φ = 1095888437280.

The previous prime is 1321203332311. The next prime is 1321203332359. The reversal of 1321203332323 is 3232333021231.

It is not a de Polignac number, because 1321203332323 - 2²⁵ = 1321169777891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321203332291 and 1321203332300.

It is not an unprimeable number, because it can be changed into a prime (1321203332303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6707386 + ... + 6901552.

It is an arithmetic number, because the mean of its divisors is an integer number (97419522304).

Almost surely, 2^{1321203332323} is an apocalyptic number.

1321203332323 is a deficient number, since it is larger than the sum of its proper divisors (237509024541).

1321203332323 is a wasteful number, since it uses less digits than its factorization.

1321203332323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225562.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 1321203332323 its reverse (3232333021231), we get a palindrome (4553536353554).

The spelling of 1321203332323 in words is "one trillion, three hundred twenty-one billion, two hundred three million, three hundred thirty-two thousand, three hundred twenty-three".