20100402317 has 2 divisors, whose sum is σ = 20100402318. Its totient is φ = 20100402316.

The previous prime is 20100402299. The next prime is 20100402323. The reversal of 20100402317 is 71320400102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16409353801 + 3691048516 = 128099^2 + 60754^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100402317 - 2⁸ = 20100402061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100401317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050201158 + 10050201159.

It is an arithmetic number, because the mean of its divisors is an integer number (10050201159).

Almost surely, 2^20100402317 is an apocalyptic number.

It is an amenable number.

20100402317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100402317 is an equidigital number, since it uses as much as digits as its factorization.

20100402317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20100402317 its reverse (71320400102), we get a palindrome (91420802419).

The spelling of 20100402317 in words is "twenty billion, one hundred million, four hundred two thousand, three hundred seventeen".