213132332231 has 32 divisors (see below), whose sum is σ = 268110839808. Its totient is φ = 164913091200.

The previous prime is 213132332201. The next prime is 213132332239. The reversal of 213132332231 is 132233231312.

It is not a de Polignac number, because 213132332231 - 2²² = 213128137927 is a prime.

It is a super-2 number, since 2×213132332231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213132332231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213132332239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5545226 + ... + 5583528.

It is an arithmetic number, because the mean of its divisors is an integer number (8378463744).

Almost surely, 2^213132332231 is an apocalyptic number.

213132332231 is a deficient number, since it is larger than the sum of its proper divisors (54978507577).

213132332231 is a wasteful number, since it uses less digits than its factorization.

213132332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39671.

The product of its digits is 3888, while the sum is 26.

Adding to 213132332231 its reverse (132233231312), we get a palindrome (345365563543).

The spelling of 213132332231 in words is "two hundred thirteen billion, one hundred thirty-two million, three hundred thirty-two thousand, two hundred thirty-one".