213431243341231 has 16 divisors (see below), whose sum is σ = 224958851756800. Its totient is φ = 201933171134208.

The previous prime is 213431243341181. The next prime is 213431243341237. The reversal of 213431243341231 is 132143342134312.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213431243341231 is a prime.

It is a super-2 number, since 2×213431243341231² (a number of 29 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 (213431243341237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77447260 + ... + 80155726.

It is an arithmetic number, because the mean of its divisors is an integer number (14059928234800).

Almost surely, 2^{213431243341231} is an apocalyptic number.

213431243341231 is a deficient number, since it is larger than the sum of its proper divisors (11527608415569).

213431243341231 is a wasteful number, since it uses less digits than its factorization.

213431243341231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713918.

The product of its digits is 124416, while the sum is 37.

Adding to 213431243341231 its reverse (132143342134312), we get a palindrome (345574585475543).

The spelling of 213431243341231 in words is "two hundred thirteen trillion, four hundred thirty-one billion, two hundred forty-three million, three hundred forty-one thousand, two hundred thirty-one".