211231063 has 2 divisors, whose sum is σ = 211231064. Its totient is φ = 211231062.

The previous prime is 211231051. The next prime is 211231079. The reversal of 211231063 is 360132112.

211231063 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 a de Polignac number, because none of the positive numbers 2^k-211231063 is a prime.

It is a super-2 number, since 2×211231063² = 89237123952219938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211231063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211231463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615531 + 105615532.

It is an arithmetic number, because the mean of its divisors is an integer number (105615532).

Almost surely, 2^211231063 is an apocalyptic number.

211231063 is a deficient number, since it is larger than the sum of its proper divisors (1).

211231063 is an equidigital number, since it uses as much as digits as its factorization.

211231063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 211231063 is about 14533.7903865440. The cubic root of 211231063 is about 595.5514159415.

Adding to 211231063 its reverse (360132112), we get a palindrome (571363175).

The spelling of 211231063 in words is "two hundred eleven million, two hundred thirty-one thousand, sixty-three".