21311302010323 has 16 divisors (see below), whose sum is σ = 23035937000832. Its totient is φ = 19598857200000.

The previous prime is 21311302010311. The next prime is 21311302010329. The reversal of 21311302010323 is 32301020311312.

It is not a de Polignac number, because 21311302010323 - 2⁴¹ = 19112278754771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21311302010294 and 21311302010303.

It is not an unprimeable number, because it can be changed into a prime (21311302010329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207456873 + ... + 207559573.

It is an arithmetic number, because the mean of its divisors is an integer number (1439746062552).

Almost surely, 2^{21311302010323} is an apocalyptic number.

21311302010323 is a deficient number, since it is larger than the sum of its proper divisors (1724634990509).

21311302010323 is a wasteful number, since it uses less digits than its factorization.

21311302010323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161886.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21311302010323 its reverse (32301020311312), we get a palindrome (53612322321635).

The spelling of 21311302010323 in words is "twenty-one trillion, three hundred eleven billion, three hundred two million, ten thousand, three hundred twenty-three".