211063997 has 2 divisors, whose sum is σ = 211063998. Its totient is φ = 211063996.

The previous prime is 211063991. The next prime is 211064011. The reversal of 211063997 is 799360112.

It is a happy number.

211063997 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 can be written as a sum of positive squares in only one way, i.e., 210279001 + 784996 = 14501^2 + 886^2 .

It is a cyclic number.

It is not a de Polignac number, because 211063997 - 2²² = 206869693 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211063997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211063991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105531998 + 105531999.

It is an arithmetic number, because the mean of its divisors is an integer number (105531999).

Almost surely, 2^211063997 is an apocalyptic number.

It is an amenable number.

211063997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211063997 is an equidigital number, since it uses as much as digits as its factorization.

211063997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 211063997 is about 14528.0417469114. The cubic root of 211063997 is about 595.3943641738.

The spelling of 211063997 in words is "two hundred eleven million, sixty-three thousand, nine hundred ninety-seven".