213100202331 has 12 divisors (see below), whose sum is σ = 318425590080. Its totient is φ = 137167946160.

The previous prime is 213100202281. The next prime is 213100202333. The reversal of 213100202331 is 133202001312.

213100202331 is a `hidden beast` number, since 2 + 1 + 310 + 0 + 20 + 2 + 331 = 666.

213100202331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-213100202331 is a prime.

It is a super-2 number, since 2×213100202331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213100202333) 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 11 ways as a sum of consecutive naturals, for example, 408237675 + ... + 408238196.

It is an arithmetic number, because the mean of its divisors is an integer number (26535465840).

Almost surely, 2^213100202331 is an apocalyptic number.

213100202331 is a deficient number, since it is larger than the sum of its proper divisors (105325387749).

213100202331 is a wasteful number, since it uses less digits than its factorization.

213100202331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816475906 (or 816475903 counting only the distinct ones).

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

Adding to 213100202331 its reverse (133202001312), we get a palindrome (346302203643).

The spelling of 213100202331 in words is "two hundred thirteen billion, one hundred million, two hundred two thousand, three hundred thirty-one".