213222333231 has 32 divisors (see below), whose sum is σ = 324513457920. Its totient is φ = 138267546912.

The previous prime is 213222333187. The next prime is 213222333241. The reversal of 213222333231 is 132333222312.

213222333231 is a `hidden beast` number, since 2 + 1 + 322 + 2 + 3 + 332 + 3 + 1 = 666.

213222333231 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 213222333231 - 2¹⁴ = 213222316847 is a prime.

It is a super-2 number, since 2×213222333231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 213222333195 and 213222333204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213222333241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3771136 + ... + 3827258.

It is an arithmetic number, because the mean of its divisors is an integer number (10141045560).

Almost surely, 2^213222333231 is an apocalyptic number.

213222333231 is a deficient number, since it is larger than the sum of its proper divisors (111291124689).

213222333231 is a wasteful number, since it uses less digits than its factorization.

213222333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59972 (or 59966 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 213222333231 its reverse (132333222312), we get a palindrome (345555555543).

The spelling of 213222333231 in words is "two hundred thirteen billion, two hundred twenty-two million, three hundred thirty-three thousand, two hundred thirty-one".