213423220231 has 8 divisors (see below), whose sum is σ = 229969034064. Its totient is φ = 196895784000.

The previous prime is 213423220211. The next prime is 213423220237. The reversal of 213423220231 is 132022324312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213423220231 - 2²⁵ = 213389665799 is a prime.

It is a super-2 number, since 2×213423220231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213423220196 and 213423220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213423220237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4570270 + ... + 4616731.

It is an arithmetic number, because the mean of its divisors is an integer number (28746129258).

Almost surely, 2^213423220231 is an apocalyptic number.

213423220231 is a deficient number, since it is larger than the sum of its proper divisors (16545813833).

213423220231 is a wasteful number, since it uses less digits than its factorization.

213423220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188801.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 213423220231 its reverse (132022324312), we get a palindrome (345445544543).

The spelling of 213423220231 in words is "two hundred thirteen billion, four hundred twenty-three million, two hundred twenty thousand, two hundred thirty-one".