211230473 has 2 divisors, whose sum is σ = 211230474. Its totient is φ = 211230472.

The previous prime is 211230463. The next prime is 211230479. The reversal of 211230473 is 374032112.

211230473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176278729 + 34951744 = 13277^2 + 5912^2 .

It is a cyclic number.

It is not a de Polignac number, because 211230473 - 2²⁴ = 194453257 is a prime.

It is a super-3 number, since 3×211230473³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211230479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615236 + 105615237.

It is an arithmetic number, because the mean of its divisors is an integer number (105615237).

Almost surely, 2^211230473 is an apocalyptic number.

It is an amenable number.

211230473 is a deficient number, since it is larger than the sum of its proper divisors (1).

211230473 is an equidigital number, since it uses as much as digits as its factorization.

211230473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 211230473 is about 14533.7700890031. The cubic root of 211230473 is about 595.5508614529.

Adding to 211230473 its reverse (374032112), we get a palindrome (585262585).

The spelling of 211230473 in words is "two hundred eleven million, two hundred thirty thousand, four hundred seventy-three".