213322131 has 24 divisors (see below), whose sum is σ = 345234864. Its totient is φ = 125789760.

The previous prime is 213322121. The next prime is 213322147. The reversal of 213322131 is 131223312.

213322131 is a `hidden beast` number, since 213 + 322 + 131 = 666.

213322131 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 213322131 - 2¹⁰ = 213321107 is a prime.

It is a super-2 number, since 2×213322131² = 91012663148762322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213322121) 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, 25456 + ... + 32781.

It is an arithmetic number, because the mean of its divisors is an integer number (14384786).

Almost surely, 2^213322131 is an apocalyptic number.

213322131 is a deficient number, since it is larger than the sum of its proper divisors (131912733).

213322131 is a wasteful number, since it uses less digits than its factorization.

213322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58291 (or 58288 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 213322131 is about 14605.5513761035. The cubic root of 213322131 is about 597.5101739017.

Adding to 213322131 its reverse (131223312), we get a palindrome (344545443).

The spelling of 213322131 in words is "two hundred thirteen million, three hundred twenty-two thousand, one hundred thirty-one".