21303411320 has 16 divisors (see below), whose sum is σ = 47932675560. Its totient is φ = 8521364512.

The previous prime is 21303411289. The next prime is 21303411347. The reversal of 21303411320 is 2311430312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21303411292 and 21303411301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266292602 + ... + 266292681.

Almost surely, 2^21303411320 is an apocalyptic number.

21303411320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303411320 is an abundant number, since it is smaller than the sum of its proper divisors (26629264240).

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

21303411320 is a wasteful number, since it uses less digits than its factorization.

21303411320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532585294 (or 532585290 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21303411320 its reverse (2311430312), we get a palindrome (23614841632).

The spelling of 21303411320 in words is "twenty-one billion, three hundred three million, four hundred eleven thousand, three hundred twenty".