211264369 has 2 divisors, whose sum is σ = 211264370. Its totient is φ = 211264368.

The previous prime is 211264367. The next prime is 211264379. The reversal of 211264369 is 963462112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145443600 + 65820769 = 12060^2 + 8113^2 .

It is a cyclic number.

It is not a de Polignac number, because 211264369 - 2¹ = 211264367 is a prime.

It is a super-2 number, since 2×211264369² = 89265267217936322, which contains 22 as substring.

Together with 211264367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211264367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105632184 + 105632185.

It is an arithmetic number, because the mean of its divisors is an integer number (105632185).

Almost surely, 2^211264369 is an apocalyptic number.

It is an amenable number.

211264369 is a deficient number, since it is larger than the sum of its proper divisors (1).

211264369 is an equidigital number, since it uses as much as digits as its factorization.

211264369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 211264369 is about 14534.9361539705. The cubic root of 211264369 is about 595.5827156199.

The spelling of 211264369 in words is "two hundred eleven million, two hundred sixty-four thousand, three hundred sixty-nine".