21314244310331 has 4 divisors (see below), whose sum is σ = 24359136354672. Its totient is φ = 18269352265992.

The previous prime is 21314244310291. The next prime is 21314244310453. The reversal of 21314244310331 is 13301344241312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21314244310331 is a prime.

It is a super-2 number, since 2×21314244310331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21314244318331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522446022160 + ... + 1522446022173.

It is an arithmetic number, because the mean of its divisors is an integer number (6089784088668).

Almost surely, 2^{21314244310331} is an apocalyptic number.

21314244310331 is a deficient number, since it is larger than the sum of its proper divisors (3044892044341).

21314244310331 is an equidigital number, since it uses as much as digits as its factorization.

21314244310331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044892044340.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 21314244310331 its reverse (13301344241312), we get a palindrome (34615588551643).

The spelling of 21314244310331 in words is "twenty-one trillion, three hundred fourteen billion, two hundred forty-four million, three hundred ten thousand, three hundred thirty-one".