21323123130310 has 16 divisors (see below), whose sum is σ = 39317758748352. Its totient is φ = 8321218782400.

The previous prime is 21323123130241. The next prime is 21323123130349. The reversal of 21323123130310 is 1303132132312.

It is a super-2 number, since 2×21323123130310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26003808286 + ... + 26003809105.

It is an arithmetic number, because the mean of its divisors is an integer number (2457359921772).

Almost surely, 2^{21323123130310} is an apocalyptic number.

21323123130310 is a deficient number, since it is larger than the sum of its proper divisors (17994635618042).

21323123130310 is a wasteful number, since it uses less digits than its factorization.

21323123130310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52007617439.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21323123130310 its reverse (1303132132312), we get a palindrome (22626255262622).

The spelling of 21323123130310 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty-three million, one hundred thirty thousand, three hundred ten".