21304333340313 has 8 divisors (see below), whose sum is σ = 28552957983648. Its totient is φ = 14129298795264.

The previous prime is 21304333340273. The next prime is 21304333340363. The reversal of 21304333340313 is 31304333340312.

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

It is not a de Polignac number, because 21304333340313 - 2⁶ = 21304333340249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21304333340363) 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, 18397523895 + ... + 18397525052.

It is an arithmetic number, because the mean of its divisors is an integer number (3569119747956).

Almost surely, 2^{21304333340313} is an apocalyptic number.

It is an amenable number.

21304333340313 is a deficient number, since it is larger than the sum of its proper divisors (7248624643335).

21304333340313 is a wasteful number, since it uses less digits than its factorization.

21304333340313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36795049143.

The product of its (nonzero) digits is 69984, while the sum is 33.

Adding to 21304333340313 its reverse (31304333340312), we get a palindrome (52608666680625).

Subtracting 21304333340313 from its reverse (31304333340312), we obtain a palindrome (9999999999999).

The spelling of 21304333340313 in words is "twenty-one trillion, three hundred four billion, three hundred thirty-three million, three hundred forty thousand, three hundred thirteen".