21024312340311 has 48 divisors (see below), whose sum is σ = 35828784209920. Its totient is φ = 11625566186880.

The previous prime is 21024312340289. The next prime is 21024312340319. The reversal of 21024312340311 is 11304321342012.

21024312340311 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 4 + 3 + 1 + 2 + 340 + 311 = 666.

It is not a de Polignac number, because 21024312340311 - 2¹³ = 21024312332119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024312340319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29317650 + ... + 30026208.

Almost surely, 2^{21024312340311} is an apocalyptic number.

21024312340311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21024312340311 is a deficient number, since it is larger than the sum of its proper divisors (14804471869609).

21024312340311 is a wasteful number, since it uses less digits than its factorization.

21024312340311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723796 (or 723793 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21024312340311 its reverse (11304321342012), we get a palindrome (32328633682323).

The spelling of 21024312340311 in words is "twenty-one trillion, twenty-four billion, three hundred twelve million, three hundred forty thousand, three hundred eleven".