213211440230331 has 4 divisors (see below), whose sum is σ = 284281920307112. Its totient is φ = 142140960153552.

The previous prime is 213211440230291. The next prime is 213211440230419. The reversal of 213211440230331 is 133032044112312.

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

It is not a de Polignac number, because 213211440230331 - 2⁶ = 213211440230267 is a prime.

It is a super-2 number, since 2×213211440230331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213211440210331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35535240038386 + ... + 35535240038391.

It is an arithmetic number, because the mean of its divisors is an integer number (71070480076778).

Almost surely, 2^{213211440230331} is an apocalyptic number.

213211440230331 is a deficient number, since it is larger than the sum of its proper divisors (71070480076781).

213211440230331 is an equidigital number, since it uses as much as digits as its factorization.

213211440230331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71070480076780.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 213211440230331 its reverse (133032044112312), we get a palindrome (346243484342643).

The spelling of 213211440230331 in words is "two hundred thirteen trillion, two hundred eleven billion, four hundred forty million, two hundred thirty thousand, three hundred thirty-one".