21301300311231 has 96 divisors (see below), whose sum is σ = 30341915997120. Its totient is φ = 13271856998400.

The previous prime is 21301300311223. The next prime is 21301300311349. The reversal of 21301300311231 is 13211300310312.

It is a happy number.

It is not a de Polignac number, because 21301300311231 - 2³ = 21301300311223 is a prime.

It is a super-2 number, since 2×21301300311231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301300311198 and 21301300311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301300711231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16125132051 + ... + 16125133371.

It is an arithmetic number, because the mean of its divisors is an integer number (316061624970).

Almost surely, 2^{21301300311231} is an apocalyptic number.

21301300311231 is a deficient number, since it is larger than the sum of its proper divisors (9040615685889).

21301300311231 is a wasteful number, since it uses less digits than its factorization.

21301300311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21301300311231 its reverse (13211300310312), we get a palindrome (34512600621543).

The spelling of 21301300311231 in words is "twenty-one trillion, three hundred one billion, three hundred million, three hundred eleven thousand, two hundred thirty-one".