213221032231 has 8 divisors (see below), whose sum is σ = 215224043760. Its totient is φ = 211218872832.

The previous prime is 213221032151. The next prime is 213221032261. The reversal of 213221032231 is 132230122312.

213221032231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213221032231 - 2²⁵ = 213187477799 is a prime.

It is a super-2 number, since 2×213221032231² (a number of 23 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 (213221032261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295431 + ... + 716743.

It is an arithmetic number, because the mean of its divisors is an integer number (26903005470).

Almost surely, 2^213221032231 is an apocalyptic number.

213221032231 is a deficient number, since it is larger than the sum of its proper divisors (2003011529).

213221032231 is a wasteful number, since it uses less digits than its factorization.

213221032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426065.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213221032231 its reverse (132230122312), we get a palindrome (345451154543).

The spelling of 213221032231 in words is "two hundred thirteen billion, two hundred twenty-one million, thirty-two thousand, two hundred thirty-one".