20323113321 has 64 divisors (see below), whose sum is σ = 32604364800. Its totient is φ = 11019131136.

The previous prime is 20323113313. The next prime is 20323113347. The reversal of 20323113321 is 12331132302.

It is not a de Polignac number, because 20323113321 - 2³ = 20323113313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20323113721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5092795 + ... + 5096783.

It is an arithmetic number, because the mean of its divisors is an integer number (509443200).

Almost surely, 2^20323113321 is an apocalyptic number.

20323113321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20323113321 is a deficient number, since it is larger than the sum of its proper divisors (12281251479).

20323113321 is a wasteful number, since it uses less digits than its factorization.

20323113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198.

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

Adding to 20323113321 its reverse (12331132302), we get a palindrome (32654245623).

The spelling of 20323113321 in words is "twenty billion, three hundred twenty-three million, one hundred thirteen thousand, three hundred twenty-one".