21300236383 has 4 divisors (see below), whose sum is σ = 21649420648. Its totient is φ = 20951052120.

The previous prime is 21300236381. The next prime is 21300236413. The reversal of 21300236383 is 38363200312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21300236383 - 2¹ = 21300236381 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 (21300236381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174592041 + ... + 174592162.

It is an arithmetic number, because the mean of its divisors is an integer number (5412355162).

Almost surely, 2^21300236383 is an apocalyptic number.

21300236383 is a deficient number, since it is larger than the sum of its proper divisors (349184265).

21300236383 is an equidigital number, since it uses as much as digits as its factorization.

21300236383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349184264.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 21300236383 its reverse (38363200312), we get a palindrome (59663436695).

The spelling of 21300236383 in words is "twenty-one billion, three hundred million, two hundred thirty-six thousand, three hundred eighty-three".