213853281 has 16 divisors (see below), whose sum is σ = 292052544. Its totient is φ = 139152384.

The previous prime is 213853273. The next prime is 213853309. The reversal of 213853281 is 182358312.

213853281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213853281 - 2³ = 213853273 is a prime.

It is a super-2 number, since 2×213853281² = 91466451588929922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213853231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16210 + ... + 26276.

It is an arithmetic number, because the mean of its divisors is an integer number (18253284).

Almost surely, 2^213853281 is an apocalyptic number.

It is an amenable number.

213853281 is a deficient number, since it is larger than the sum of its proper divisors (78199263).

213853281 is a wasteful number, since it uses less digits than its factorization.

213853281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10240.

The product of its digits is 11520, while the sum is 33.

The square root of 213853281 is about 14623.7232263196. The cubic root of 213853281 is about 598.0056756843.

The spelling of 213853281 in words is "two hundred thirteen million, eight hundred fifty-three thousand, two hundred eighty-one".