20211423323 has 24 divisors (see below), whose sum is σ = 25749002160. Its totient is φ = 15720384960.

The previous prime is 20211423317. The next prime is 20211423367. The reversal of 20211423323 is 32332411202.

It is not a de Polignac number, because 20211423323 - 2²² = 20207229019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211423523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231308 + ... + 306473.

It is an arithmetic number, because the mean of its divisors is an integer number (1072875090).

Almost surely, 2^20211423323 is an apocalyptic number.

20211423323 is a deficient number, since it is larger than the sum of its proper divisors (5537578837).

20211423323 is a wasteful number, since it uses less digits than its factorization.

20211423323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537867 (or 537860 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20211423323 its reverse (32332411202), we get a palindrome (52543834525).

The spelling of 20211423323 in words is "twenty billion, two hundred eleven million, four hundred twenty-three thousand, three hundred twenty-three".