20321111323 has 8 divisors (see below), whose sum is σ = 20732405760. Its totient is φ = 19912993320.

The previous prime is 20321111299. The next prime is 20321111341. The reversal of 20321111323 is 32311112302.

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 20321111323 - 2³³ = 11731176731 is a prime.

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 20321111323.

It is not an unprimeable number, because it can be changed into a prime (20321112323) 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, 781183 + ... + 806776.

It is an arithmetic number, because the mean of its divisors is an integer number (2591550720).

Almost surely, 2^20321111323 is an apocalyptic number.

20321111323 is a deficient number, since it is larger than the sum of its proper divisors (411294437).

20321111323 is a wasteful number, since it uses less digits than its factorization.

20321111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588217.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20321111323 its reverse (32311112302), we get a palindrome (52632223625).

The spelling of 20321111323 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, three hundred twenty-three".