213302331 has 24 divisors (see below), whose sum is σ = 336960000. Its totient is φ = 128948400.

The previous prime is 213302293. The next prime is 213302333. The reversal of 213302331 is 133203312.

213302331 is a `hidden beast` number, since 2 + 1 + 330 + 2 + 331 = 666.

It is not a de Polignac number, because 213302331 - 2⁹ = 213301819 is a prime.

It is a super-2 number, since 2×213302331² = 90995768820067122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213302333) 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 23 ways as a sum of consecutive naturals, for example, 40170 + ... + 45168.

It is an arithmetic number, because the mean of its divisors is an integer number (14040000).

Almost surely, 2^213302331 is an apocalyptic number.

213302331 is a deficient number, since it is larger than the sum of its proper divisors (123657669).

213302331 is a wasteful number, since it uses less digits than its factorization.

213302331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5444 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213302331 is about 14604.8735359126. The cubic root of 213302331 is about 597.4916868880.

Adding to 213302331 its reverse (133203312), we get a palindrome (346505643).

The spelling of 213302331 in words is "two hundred thirteen million, three hundred two thousand, three hundred thirty-one".