20203313423 has 4 divisors (see below), whose sum is σ = 20226091440. Its totient is φ = 20180535408.

The previous prime is 20203313411. The next prime is 20203313437. The reversal of 20203313423 is 32431330202.

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 20203313423 - 2⁶ = 20203313359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203313483) 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, 11387678 + ... + 11389451.

It is an arithmetic number, because the mean of its divisors is an integer number (5056522860).

Almost surely, 2^20203313423 is an apocalyptic number.

20203313423 is a deficient number, since it is larger than the sum of its proper divisors (22778017).

20203313423 is an equidigital number, since it uses as much as digits as its factorization.

20203313423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22778016.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20203313423 its reverse (32431330202), we get a palindrome (52634643625).

The spelling of 20203313423 in words is "twenty billion, two hundred three million, three hundred thirteen thousand, four hundred twenty-three".