213330381 has 12 divisors (see below), whose sum is σ = 312650016. Its totient is φ = 129290920.

The previous prime is 213330379. The next prime is 213330473. The reversal of 213330381 is 183033312.

It is not a de Polignac number, because 213330381 - 2¹ = 213330379 is a prime.

It is a super-2 number, since 2×213330381² = 91019702915210322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213330361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293481 + ... + 294206.

It is an arithmetic number, because the mean of its divisors is an integer number (26054168).

Almost surely, 2^213330381 is an apocalyptic number.

It is an amenable number.

213330381 is a deficient number, since it is larger than the sum of its proper divisors (99319635).

213330381 is a wasteful number, since it uses less digits than its factorization.

213330381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587712 (or 587701 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 213330381 is about 14605.8338002320. The cubic root of 213330381 is about 597.5178764864.

Adding to 213330381 its reverse (183033312), we get a palindrome (396363693).

The spelling of 213330381 in words is "two hundred thirteen million, three hundred thirty thousand, three hundred eighty-one".