211230263 has 2 divisors, whose sum is σ = 211230264. Its totient is φ = 211230262.

The previous prime is 211230259. The next prime is 211230301. The reversal of 211230263 is 362032112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211230263 - 2² = 211230259 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211230463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615131 + 105615132.

It is an arithmetic number, because the mean of its divisors is an integer number (105615132).

Almost surely, 2^211230263 is an apocalyptic number.

211230263 is a deficient number, since it is larger than the sum of its proper divisors (1).

211230263 is an equidigital number, since it uses as much as digits as its factorization.

211230263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 211230263 is about 14533.7628644477. The cubic root of 211230263 is about 595.5506640923.

Adding to 211230263 its reverse (362032112), we get a palindrome (573262375).

The spelling of 211230263 in words is "two hundred eleven million, two hundred thirty thousand, two hundred sixty-three".