211353047 has 4 divisors (see below), whose sum is σ = 211382256. Its totient is φ = 211323840.

The previous prime is 211353001. The next prime is 211353089. The reversal of 211353047 is 740353112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211353047 - 2²⁴ = 194575831 is a prime.

It is a super-2 number, since 2×211353047² = 89340220952368418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211353547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5222 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (52845564).

Almost surely, 2^211353047 is an apocalyptic number.

211353047 is a deficient number, since it is larger than the sum of its proper divisors (29209).

211353047 is a wasteful number, since it uses less digits than its factorization.

211353047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29208.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 211353047 is about 14537.9863461210. The cubic root of 211353047 is about 595.6660357058. Note that the first 3 decimals are identical.

The spelling of 211353047 in words is "two hundred eleven million, three hundred fifty-three thousand, forty-seven".