21336463313 has 4 divisors (see below), whose sum is σ = 23276141808. Its totient is φ = 19396784820.

The previous prime is 21336463273. The next prime is 21336463321. The reversal of 21336463313 is 31336463312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21336463313 - 2⁶ = 21336463249 is a prime.

It is a super-3 number, since 3×21336463313³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21336463333) 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 3 ways as a sum of consecutive naturals, for example, 969839231 + ... + 969839252.

It is an arithmetic number, because the mean of its divisors is an integer number (5819035452).

Almost surely, 2^21336463313 is an apocalyptic number.

It is an amenable number.

21336463313 is a deficient number, since it is larger than the sum of its proper divisors (1939678495).

21336463313 is a wasteful number, since it uses less digits than its factorization.

21336463313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939678494.

The product of its digits is 69984, while the sum is 35.

Subtracting 21336463313 from its reverse (31336463312), we obtain a palindrome (9999999999).

The spelling of 21336463313 in words is "twenty-one billion, three hundred thirty-six million, four hundred sixty-three thousand, three hundred thirteen".