1321003012323 has 8 divisors (see below), whose sum is σ = 1761343720128. Its totient is φ = 880665489704.

The previous prime is 1321003012313. The next prime is 1321003012339. The reversal of 1321003012323 is 3232103001231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321003012323 - 2⁵ = 1321003012291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321003012323.

It is not an unprimeable number, because it can be changed into a prime (1321003012313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450136 + ... + 1686602.

It is an arithmetic number, because the mean of its divisors is an integer number (220167965016).

Almost surely, 2^{1321003012323} is an apocalyptic number.

1321003012323 is a deficient number, since it is larger than the sum of its proper divisors (440340707805).

1321003012323 is a wasteful number, since it uses less digits than its factorization.

1321003012323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592593.

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

Adding to 1321003012323 its reverse (3232103001231), we get a palindrome (4553106013554).

The spelling of 1321003012323 in words is "one trillion, three hundred twenty-one billion, three million, twelve thousand, three hundred twenty-three".