213133293 has 24 divisors (see below), whose sum is σ = 319213440. Its totient is φ = 136933440.

The previous prime is 213133289. The next prime is 213133313. The reversal of 213133293 is 392331312.

213133293 is a `hidden beast` number, since 21 + 313 + 329 + 3 = 666.

It is not a de Polignac number, because 213133293 - 2² = 213133289 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213133213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27148 + ... + 34106.

It is an arithmetic number, because the mean of its divisors is an integer number (13300560).

Almost surely, 2^213133293 is an apocalyptic number.

It is an amenable number.

213133293 is a deficient number, since it is larger than the sum of its proper divisors (106080147).

213133293 is a wasteful number, since it uses less digits than its factorization.

213133293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7089 (or 7086 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 213133293 is about 14599.0853480620. The cubic root of 213133293 is about 597.3338116147. Note that the first 3 decimals are identical.

The spelling of 213133293 in words is "two hundred thirteen million, one hundred thirty-three thousand, two hundred ninety-three".