211465147 has 4 divisors (see below), whose sum is σ = 211559040. Its totient is φ = 211371256.

The previous prime is 211465139. The next prime is 211465153. The reversal of 211465147 is 741564112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211465147 - 2³ = 211465139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211465127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43483 + ... + 48100.

It is an arithmetic number, because the mean of its divisors is an integer number (52889760).

Almost surely, 2^211465147 is an apocalyptic number.

211465147 is a deficient number, since it is larger than the sum of its proper divisors (93893).

211465147 is an equidigital number, since it uses as much as digits as its factorization.

211465147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93892.

The product of its digits is 6720, while the sum is 31.

The square root of 211465147 is about 14541.8412520561. The cubic root of 211465147 is about 595.7713292916.

The spelling of 211465147 in words is "two hundred eleven million, four hundred sixty-five thousand, one hundred forty-seven".