213223031330231 has 24 divisors (see below), whose sum is σ = 231033183258384. Its totient is φ = 196696227087360.

The previous prime is 213223031330219. The next prime is 213223031330251. The reversal of 213223031330231 is 132033130322312.

It is a de Polignac number, because none of the positive numbers 2^k-213223031330231 is a prime.

It is a super-2 number, since 2×213223031330231² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213223031330194 and 213223031330203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213223031330251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2685016916 + ... + 2685096326.

It is an arithmetic number, because the mean of its divisors is an integer number (9626382635766).

Almost surely, 2^{213223031330231} is an apocalyptic number.

213223031330231 is a deficient number, since it is larger than the sum of its proper divisors (17810151928153).

213223031330231 is a wasteful number, since it uses less digits than its factorization.

213223031330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89331 (or 89318 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 213223031330231 its reverse (132033130322312), we get a palindrome (345256161652543).

The spelling of 213223031330231 in words is "two hundred thirteen trillion, two hundred twenty-three billion, thirty-one million, three hundred thirty thousand, two hundred thirty-one".