213300331231 has 4 divisors (see below), whose sum is σ = 229708049032. Its totient is φ = 196892613432.

The previous prime is 213300331163. The next prime is 213300331241. The reversal of 213300331231 is 132133003312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213300331231 - 2¹¹ = 213300329183 is a prime.

It is a super-2 number, since 2×213300331231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213300331241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8203858881 + ... + 8203858906.

It is an arithmetic number, because the mean of its divisors is an integer number (57427012258).

Almost surely, 2^213300331231 is an apocalyptic number.

213300331231 is a deficient number, since it is larger than the sum of its proper divisors (16407717801).

213300331231 is a wasteful number, since it uses less digits than its factorization.

213300331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16407717800.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213300331231 its reverse (132133003312), we get a palindrome (345433334543).

The spelling of 213300331231 in words is "two hundred thirteen billion, three hundred million, three hundred thirty-one thousand, two hundred thirty-one".