211403341517 has 2 divisors, whose sum is σ = 211403341518. Its totient is φ = 211403341516.

The previous prime is 211403341507. The next prime is 211403341601. The reversal of 211403341517 is 715143304112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194400746281 + 17002595236 = 440909^2 + 130394^2 .

It is a cyclic number.

It is not a de Polignac number, because 211403341517 - 2⁶ = 211403341453 is a prime.

It is a super-2 number, since 2×211403341517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211403341507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105701670758 + 105701670759.

It is an arithmetic number, because the mean of its divisors is an integer number (105701670759).

Almost surely, 2^211403341517 is an apocalyptic number.

It is an amenable number.

211403341517 is a deficient number, since it is larger than the sum of its proper divisors (1).

211403341517 is an equidigital number, since it uses as much as digits as its factorization.

211403341517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 211403341517 its reverse (715143304112), we get a palindrome (926546645629).

The spelling of 211403341517 in words is "two hundred eleven billion, four hundred three million, three hundred forty-one thousand, five hundred seventeen".