13203423420 has 96 divisors (see below), whose sum is σ = 40601433600. Its totient is φ = 3179324160.

The previous prime is 13203423413. The next prime is 13203423503. The reversal of 13203423420 is 2432430231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31209 + ... + 165471.

It is an arithmetic number, because the mean of its divisors is an integer number (422931600).

Almost surely, 2^13203423420 is an apocalyptic number.

13203423420 is a gapful number since it is divisible by the number (10) 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 13203423420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20300716800).

13203423420 is an abundant number, since it is smaller than the sum of its proper divisors (27398010180).

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

13203423420 is a wasteful number, since it uses less digits than its factorization.

13203423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134435 (or 134433 counting only the distinct ones).

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

Adding to 13203423420 its reverse (2432430231), we get a palindrome (15635853651).

The spelling of 13203423420 in words is "thirteen billion, two hundred three million, four hundred twenty-three thousand, four hundred twenty".