20203004417 has 2 divisors, whose sum is σ = 20203004418. Its totient is φ = 20203004416.

The previous prime is 20203004411. The next prime is 20203004441. The reversal of 20203004417 is 71440030202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16057704961 + 4145299456 = 126719^2 + 64384^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203004417 - 2⁴ = 20203004401 is a prime.

It is a super-2 number, since 2×20203004417² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20203004392 and 20203004401.

It is not a weakly prime, because it can be changed into another prime (20203004411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101502208 + 10101502209.

It is an arithmetic number, because the mean of its divisors is an integer number (10101502209).

Almost surely, 2^20203004417 is an apocalyptic number.

It is an amenable number.

20203004417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203004417 is an equidigital number, since it uses as much as digits as its factorization.

20203004417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

Adding to 20203004417 its reverse (71440030202), we get a palindrome (91643034619).

The spelling of 20203004417 in words is "twenty billion, two hundred three million, four thousand, four hundred seventeen".