21313230333 has 8 divisors (see below), whose sum is σ = 29397559200. Its totient is φ = 13718860848.

The previous prime is 21313230283. The next prime is 21313230349. The reversal of 21313230333 is 33303231312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21313230333 - 2⁸ = 21313230077 is a prime.

It is a super-2 number, since 2×21313230333² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313234333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122489743 + ... + 122489916.

It is an arithmetic number, because the mean of its divisors is an integer number (3674694900).

Almost surely, 2^21313230333 is an apocalyptic number.

It is an amenable number.

21313230333 is a deficient number, since it is larger than the sum of its proper divisors (8084328867).

21313230333 is a wasteful number, since it uses less digits than its factorization.

21313230333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244979691.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21313230333 its reverse (33303231312), we get a palindrome (54616461645).

The spelling of 21313230333 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty thousand, three hundred thirty-three".