20420232323 has 4 divisors (see below), whose sum is σ = 20630750280. Its totient is φ = 20209714368.

The previous prime is 20420232319. The next prime is 20420232341. The reversal of 20420232323 is 32323202402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20420232323 - 2² = 20420232319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20420232223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105258833 + ... + 105259026.

It is an arithmetic number, because the mean of its divisors is an integer number (5157687570).

Almost surely, 2^20420232323 is an apocalyptic number.

20420232323 is a deficient number, since it is larger than the sum of its proper divisors (210517957).

20420232323 is an equidigital number, since it uses as much as digits as its factorization.

20420232323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210517956.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 20420232323 its reverse (32323202402), we get a palindrome (52743434725).

The spelling of 20420232323 in words is "twenty billion, four hundred twenty million, two hundred thirty-two thousand, three hundred twenty-three".