20302121323 has 8 divisors (see below), whose sum is σ = 22451163696. Its totient is φ = 18203644800.

The previous prime is 20302121311. The next prime is 20302121377. The reversal of 20302121323 is 32312120302.

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

It is not a de Polignac number, because 20302121323 - 2²⁵ = 20268566891 is a prime.

It is a super-2 number, since 2×20302121323² (a number of 21 digits) contains 22 as substring.

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 20302121323.

It is not an unprimeable number, because it can be changed into a prime (20302121023) 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, 12640618 + ... + 12642223.

It is an arithmetic number, because the mean of its divisors is an integer number (2806395462).

Almost surely, 2^20302121323 is an apocalyptic number.

20302121323 is a deficient number, since it is larger than the sum of its proper divisors (2149042373).

20302121323 is a wasteful number, since it uses less digits than its factorization.

20302121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25282925.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20302121323 its reverse (32312120302), we get a palindrome (52614241625).

The spelling of 20302121323 in words is "twenty billion, three hundred two million, one hundred twenty-one thousand, three hundred twenty-three".