21322313202231 has 24 divisors (see below), whose sum is σ = 31069610074880. Its totient is φ = 14090391107856.

The previous prime is 21322313202221. The next prime is 21322313202287. The reversal of 21322313202231 is 13220231322312.

21322313202231 is a `hidden beast` number, since 2 + 1 + 3 + 223 + 1 + 3 + 202 + 231 = 666.

It is not a de Polignac number, because 21322313202231 - 2¹⁰ = 21322313201207 is a prime.

It is a super-2 number, since 2×21322313202231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322313202195 and 21322313202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322313202221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18618991 + ... + 19730976.

Almost surely, 2^{21322313202231} is an apocalyptic number.

21322313202231 is a deficient number, since it is larger than the sum of its proper divisors (9747296872649).

21322313202231 is a wasteful number, since it uses less digits than its factorization.

21322313202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38350515 (or 38350512 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21322313202231 its reverse (13220231322312), we get a palindrome (34542544524543).

The spelling of 21322313202231 in words is "twenty-one trillion, three hundred twenty-two billion, three hundred thirteen million, two hundred two thousand, two hundred thirty-one".