20343031423 has 32 divisors (see below), whose sum is σ = 24268688640. Its totient is φ = 16909382880.

The previous prime is 20343031409. The next prime is 20343031469. The reversal of 20343031423 is 32413034302.

It is not a de Polignac number, because 20343031423 - 2⁵ = 20343031391 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 (20343031483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2581936 + ... + 2589802.

It is an arithmetic number, because the mean of its divisors is an integer number (758396520).

Almost surely, 2^20343031423 is an apocalyptic number.

20343031423 is a deficient number, since it is larger than the sum of its proper divisors (3925657217).

20343031423 is a wasteful number, since it uses less digits than its factorization.

20343031423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8024 (or 7998 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20343031423 its reverse (32413034302), we get a palindrome (52756065725).

The spelling of 20343031423 in words is "twenty billion, three hundred forty-three million, thirty-one thousand, four hundred twenty-three".