210280243 has 2 divisors, whose sum is σ = 210280244. Its totient is φ = 210280242.

The previous prime is 210280241. The next prime is 210280253. The reversal of 210280243 is 342082012.

210280243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210280243 - 2¹ = 210280241 is a prime.

It is a super-2 number, since 2×210280243² = 88435561192278098, which contains 22 as substring.

Together with 210280241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (210280241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105140121 + 105140122.

It is an arithmetic number, because the mean of its divisors is an integer number (105140122).

Almost surely, 2^210280243 is an apocalyptic number.

210280243 is a deficient number, since it is larger than the sum of its proper divisors (1).

210280243 is an equidigital number, since it uses as much as digits as its factorization.

210280243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 210280243 is about 14501.0428245695. The cubic root of 210280243 is about 594.6564813233.

The spelling of 210280243 in words is "two hundred ten million, two hundred eighty thousand, two hundred forty-three".