21331033332313 has 8 divisors (see below), whose sum is σ = 21378784896000. Its totient is φ = 21283282852608.

The previous prime is 21331033332239. The next prime is 21331033332337. The reversal of 21331033332313 is 31323333013312.

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

It is a cyclic number.

It is not a de Polignac number, because 21331033332313 - 2²⁵ = 21330999777881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331033332913) 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, 49227720 + ... + 49659142.

It is an arithmetic number, because the mean of its divisors is an integer number (2672348112000).

Almost surely, 2^{21331033332313} is an apocalyptic number.

It is an amenable number.

21331033332313 is a deficient number, since it is larger than the sum of its proper divisors (47751563687).

21331033332313 is a wasteful number, since it uses less digits than its factorization.

21331033332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541991.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 21331033332313 its reverse (31323333013312), we get a palindrome (52654366345625).

The spelling of 21331033332313 in words is "twenty-one trillion, three hundred thirty-one billion, thirty-three million, three hundred thirty-two thousand, three hundred thirteen".