21231303310023 has 64 divisors (see below), whose sum is σ = 31267542067200. Its totient is φ = 12800641216896.

The previous prime is 21231303310001. The next prime is 21231303310031. The reversal of 21231303310023 is 32001330313212.

It is not a de Polignac number, because 21231303310023 - 2⁸ = 21231303309767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21231303309975 and 21231303310002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231303310033) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40088418 + ... + 40614576.

It is an arithmetic number, because the mean of its divisors is an integer number (488555344800).

Almost surely, 2^{21231303310023} is an apocalyptic number.

21231303310023 is a deficient number, since it is larger than the sum of its proper divisors (10036238757177).

21231303310023 is an equidigital number, since it uses as much as digits as its factorization.

21231303310023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526309 (or 526271 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21231303310023 its reverse (32001330313212), we get a palindrome (53232633623235).

The spelling of 21231303310023 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred three million, three hundred ten thousand, twenty-three".