20312321323 has 8 divisors (see below), whose sum is σ = 23231585792. Its totient is φ = 17397432936.

The previous prime is 20312321287. The next prime is 20312321371. The reversal of 20312321323 is 32312321302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20312321323 - 2²⁹ = 19775450411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312321294 and 20312321303.

It is not an unprimeable number, because it can be changed into a prime (20312321423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084065 + ... + 1102642.

It is an arithmetic number, because the mean of its divisors is an integer number (2903948224).

Almost surely, 2^20312321323 is an apocalyptic number.

20312321323 is a deficient number, since it is larger than the sum of its proper divisors (2919264469).

20312321323 is a wasteful number, since it uses less digits than its factorization.

20312321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188041.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20312321323 its reverse (32312321302), we get a palindrome (52624642625).

The spelling of 20312321323 in words is "twenty billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty-three".