20320321323 has 8 divisors (see below), whose sum is σ = 28687512528. Its totient is φ = 12750005504.

The previous prime is 20320321309. The next prime is 20320321331. The reversal of 20320321323 is 32312302302.

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 20320321323 - 2¹³ = 20320313131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20320321323.

It is not an unprimeable number, because it can be changed into a prime (20320321363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199218786 + ... + 199218887.

It is an arithmetic number, because the mean of its divisors is an integer number (3585939066).

Almost surely, 2^20320321323 is an apocalyptic number.

20320321323 is a deficient number, since it is larger than the sum of its proper divisors (8367191205).

20320321323 is a wasteful number, since it uses less digits than its factorization.

20320321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398437693.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20320321323 its reverse (32312302302), we get a palindrome (52632623625).

The spelling of 20320321323 in words is "twenty billion, three hundred twenty million, three hundred twenty-one thousand, three hundred twenty-three".