20221002313 has 2 divisors, whose sum is σ = 20221002314. Its totient is φ = 20221002312.

The previous prime is 20221002311. The next prime is 20221002331. The reversal of 20221002313 is 31320012202.

Together with next prime (20221002331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12636682569 + 7584319744 = 112413^2 + 87088^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221002313 - 2¹ = 20221002311 is a prime.

Together with 20221002311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20221002311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110501156 + 10110501157.

It is an arithmetic number, because the mean of its divisors is an integer number (10110501157).

Almost surely, 2^20221002313 is an apocalyptic number.

It is an amenable number.

20221002313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221002313 is an equidigital number, since it uses as much as digits as its factorization.

20221002313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20221002313 its reverse (31320012202), we get a palindrome (51541014515).

The spelling of 20221002313 in words is "twenty billion, two hundred twenty-one million, two thousand, three hundred thirteen".