20231343420 has 96 divisors (see below), whose sum is σ = 57186712128. Its totient is φ = 5343916032.

The previous prime is 20231343409. The next prime is 20231343427. The reversal of 20231343420 is 2434313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231343427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3171354 + ... + 3177726.

It is an arithmetic number, because the mean of its divisors is an integer number (595694918).

Almost surely, 2^20231343420 is an apocalyptic number.

20231343420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20231343420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28593356064).

20231343420 is an abundant number, since it is smaller than the sum of its proper divisors (36955368708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231343420 is a wasteful number, since it uses less digits than its factorization.

20231343420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879 (or 6877 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20231343420 its reverse (2434313202), we get a palindrome (22665656622).

The spelling of 20231343420 in words is "twenty billion, two hundred thirty-one million, three hundred forty-three thousand, four hundred twenty".