211330697 has 2 divisors, whose sum is σ = 211330698. Its totient is φ = 211330696.

The previous prime is 211330619. The next prime is 211330727. The reversal of 211330697 is 796033112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115369081 + 95961616 = 10741^2 + 9796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211330697 is a prime.

It is not a weakly prime, because it can be changed into another prime (211330607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105665348 + 105665349.

It is an arithmetic number, because the mean of its divisors is an integer number (105665349).

Almost surely, 2^211330697 is an apocalyptic number.

It is an amenable number.

211330697 is a deficient number, since it is larger than the sum of its proper divisors (1).

211330697 is an equidigital number, since it uses as much as digits as its factorization.

211330697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 211330697 is about 14537.2176498806. The cubic root of 211330697 is about 595.6450382872.

The spelling of 211330697 in words is "two hundred eleven million, three hundred thirty thousand, six hundred ninety-seven".