21310232300 has 54 divisors (see below), whose sum is σ = 53793127332. Its totient is φ = 7306363680.

The previous prime is 21310232269. The next prime is 21310232303. The reversal of 21310232300 is 323201312.

It is not an unprimeable number, because it can be changed into a prime (21310232303) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2169614 + ... + 2179413.

Almost surely, 2^21310232300 is an apocalyptic number.

21310232300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310232300 is an abundant number, since it is smaller than the sum of its proper divisors (32482895032).

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

21310232300 is a wasteful number, since it uses less digits than its factorization.

21310232300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349055 (or 4349041 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21310232300 its reverse (323201312), we get a palindrome (21633433612).

The spelling of 21310232300 in words is "twenty-one billion, three hundred ten million, two hundred thirty-two thousand, three hundred".