21311303313103 has 8 divisors (see below), whose sum is σ = 21613883525280. Its totient is φ = 21008790351360.

The previous prime is 21311303313101. The next prime is 21311303313161. The reversal of 21311303313103 is 30131330311312.

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 21311303313103 - 2¹ = 21311303313101 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 (21311303313101) 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, 16174150 + ... + 17442067.

It is an arithmetic number, because the mean of its divisors is an integer number (2701735440660).

Almost surely, 2^{21311303313103} is an apocalyptic number.

21311303313103 is a deficient number, since it is larger than the sum of its proper divisors (302580212177).

21311303313103 is an equidigital number, since it uses as much as digits as its factorization.

21311303313103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33625217.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 21311303313103 its reverse (30131330311312), we get a palindrome (51442633624415).

The spelling of 21311303313103 in words is "twenty-one trillion, three hundred eleven billion, three hundred three million, three hundred thirteen thousand, one hundred three".