2113214240173 has 2 divisors, whose sum is σ = 2113214240174. Its totient is φ = 2113214240172.

The previous prime is 2113214240131. The next prime is 2113214240177. The reversal of 2113214240173 is 3710424123112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059761724969 + 53452515204 = 1435187^2 + 231198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113214240173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113214240177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056607120086 + 1056607120087.

It is an arithmetic number, because the mean of its divisors is an integer number (1056607120087).

Almost surely, 2^{2113214240173} is an apocalyptic number.

It is an amenable number.

2113214240173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113214240173 is an equidigital number, since it uses as much as digits as its factorization.

2113214240173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 2113214240173 its reverse (3710424123112), we get a palindrome (5823638363285).

The spelling of 2113214240173 in words is "two trillion, one hundred thirteen billion, two hundred fourteen million, two hundred forty thousand, one hundred seventy-three".