211256047 has 2 divisors, whose sum is σ = 211256048. Its totient is φ = 211256046.

The previous prime is 211255997. The next prime is 211256053. The reversal of 211256047 is 740652112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211256047 - 2¹⁵ = 211223279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211256057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105628023 + 105628024.

It is an arithmetic number, because the mean of its divisors is an integer number (105628024).

Almost surely, 2^211256047 is an apocalyptic number.

211256047 is a deficient number, since it is larger than the sum of its proper divisors (1).

211256047 is an equidigital number, since it uses as much as digits as its factorization.

211256047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 211256047 is about 14534.6498753840. The cubic root of 211256047 is about 595.5748952375.

It can be divided in two parts, 21125 and 6047, that added together give a palindrome (27172).

The spelling of 211256047 in words is "two hundred eleven million, two hundred fifty-six thousand, forty-seven".