20313030202321 has 2 divisors, whose sum is σ = 20313030202322. Its totient is φ = 20313030202320.

The previous prime is 20313030202253. The next prime is 20313030202351. The reversal of 20313030202321 is 12320203031302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12312414299025 + 8000615903296 = 3508905^2 + 2828536^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313030202321 - 2²¹ = 20313028105169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313030202292 and 20313030202301.

It is not a weakly prime, because it can be changed into another prime (20313030202351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156515101160 + 10156515101161.

It is an arithmetic number, because the mean of its divisors is an integer number (10156515101161).

Almost surely, 2^{20313030202321} is an apocalyptic number.

It is an amenable number.

20313030202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313030202321 is an equidigital number, since it uses as much as digits as its factorization.

20313030202321 is an evil number, because the sum of its binary digits is even.

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

Adding to 20313030202321 its reverse (12320203031302), we get a palindrome (32633233233623).

The spelling of 20313030202321 in words is "twenty trillion, three hundred thirteen billion, thirty million, two hundred two thousand, three hundred twenty-one".