211487147 has 2 divisors, whose sum is σ = 211487148. Its totient is φ = 211487146.

The previous prime is 211487117. The next prime is 211487149. The reversal of 211487147 is 741784112.

211487147 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 is a cyclic number.

It is not a de Polignac number, because 211487147 - 2⁶ = 211487083 is a prime.

Together with 211487149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211487149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105743573 + 105743574.

It is an arithmetic number, because the mean of its divisors is an integer number (105743574).

Almost surely, 2^211487147 is an apocalyptic number.

211487147 is a deficient number, since it is larger than the sum of its proper divisors (1).

211487147 is an equidigital number, since it uses as much as digits as its factorization.

211487147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 35.

The square root of 211487147 is about 14542.5976702926. The cubic root of 211487147 is about 595.7919891417.

The spelling of 211487147 in words is "two hundred eleven million, four hundred eighty-seven thousand, one hundred forty-seven".