21331010311311 has 8 divisors (see below), whose sum is σ = 28658456601984. Its totient is φ = 14112118780760.

The previous prime is 21331010311253. The next prime is 21331010311349. The reversal of 21331010311311 is 11311301013312.

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 21331010311311 - 2¹⁷ = 21331010180239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331010315311) 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, 27138689571 + ... + 27138690356.

It is an arithmetic number, because the mean of its divisors is an integer number (3582307075248).

Almost surely, 2^{21331010311311} is an apocalyptic number.

21331010311311 is a deficient number, since it is larger than the sum of its proper divisors (7327446290673).

21331010311311 is a wasteful number, since it uses less digits than its factorization.

21331010311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54277380061.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 21331010311311 its reverse (11311301013312), we get a palindrome (32642311324623).

The spelling of 21331010311311 in words is "twenty-one trillion, three hundred thirty-one billion, ten million, three hundred eleven thousand, three hundred eleven".