20231310321 has 6 divisors (see below), whose sum is σ = 29223003810. Its totient is φ = 13487540208.

The previous prime is 20231310299. The next prime is 20231310353. The reversal of 20231310321 is 12301313202.

20231310321 is a `hidden beast` number, since 2 + 0 + 2 + 31 + 310 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12596919696 + 7634390625 = 112236^2 + 87375^2 .

It is not a de Polignac number, because 20231310321 - 2⁵ = 20231310289 is a prime.

It is a super-2 number, since 2×20231310321² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20231310294 and 20231310303.

It is not an unprimeable number, because it can be changed into a prime (20231310221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1123961676 + ... + 1123961693.

It is an arithmetic number, because the mean of its divisors is an integer number (4870500635).

Almost surely, 2^20231310321 is an apocalyptic number.

It is an amenable number.

20231310321 is a deficient number, since it is larger than the sum of its proper divisors (8991693489).

20231310321 is a wasteful number, since it uses less digits than its factorization.

20231310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247923375 (or 2247923372 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20231310321 its reverse (12301313202), we get a palindrome (32532623523).

The spelling of 20231310321 in words is "twenty billion, two hundred thirty-one million, three hundred ten thousand, three hundred twenty-one".