211946461 has 2 divisors, whose sum is σ = 211946462. Its totient is φ = 211946460.

The previous prime is 211946443. The next prime is 211946489. The reversal of 211946461 is 164649112.

It is a happy number.

211946461 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., 176066361 + 35880100 = 13269^2 + 5990^2 .

It is a cyclic number.

It is not a de Polignac number, because 211946461 - 2¹⁵ = 211913693 is a prime.

It is a super-3 number, since 3×211946461³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211946491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105973230 + 105973231.

It is an arithmetic number, because the mean of its divisors is an integer number (105973231).

Almost surely, 2^211946461 is an apocalyptic number.

It is an amenable number.

211946461 is a deficient number, since it is larger than the sum of its proper divisors (1).

211946461 is an equidigital number, since it uses as much as digits as its factorization.

211946461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 211946461 is about 14558.3811256609. The cubic root of 211946461 is about 596.2229967832. Note that the first 3 decimals are identical.

The spelling of 211946461 in words is "two hundred eleven million, nine hundred forty-six thousand, four hundred sixty-one".