213550244287 has 2 divisors, whose sum is σ = 213550244288. Its totient is φ = 213550244286.

The previous prime is 213550244269. The next prime is 213550244321. The reversal of 213550244287 is 782442055312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213550244287 - 2¹¹ = 213550242239 is a prime.

It is a super-2 number, since 2×213550244287² (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 (213550244087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106775122143 + 106775122144.

It is an arithmetic number, because the mean of its divisors is an integer number (106775122144).

Almost surely, 2^213550244287 is an apocalyptic number.

213550244287 is a deficient number, since it is larger than the sum of its proper divisors (1).

213550244287 is an equidigital number, since it uses as much as digits as its factorization.

213550244287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 43.

Adding to 213550244287 its reverse (782442055312), we get a palindrome (995992299599).

The spelling of 213550244287 in words is "two hundred thirteen billion, five hundred fifty million, two hundred forty-four thousand, two hundred eighty-seven".