2113243994287 has 2 divisors, whose sum is σ = 2113243994288. Its totient is φ = 2113243994286.

The previous prime is 2113243994243. The next prime is 2113243994293. The reversal of 2113243994287 is 7824993423112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2113243994287 - 2⁷ = 2113243994159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113243994237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056621997143 + 1056621997144.

It is an arithmetic number, because the mean of its divisors is an integer number (1056621997144).

Almost surely, 2^{2113243994287} is an apocalyptic number.

2113243994287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113243994287 is an equidigital number, since it uses as much as digits as its factorization.

2113243994287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 55.

The spelling of 2113243994287 in words is "two trillion, one hundred thirteen billion, two hundred forty-three million, nine hundred ninety-four thousand, two hundred eighty-seven".