213230122231 has 4 divisors (see below), whose sum is σ = 243691568272. Its totient is φ = 182768676192.

The previous prime is 213230122219. The next prime is 213230122241. The reversal of 213230122231 is 132221032312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213230122231 - 2⁵ = 213230122199 is a prime.

It is a super-3 number, since 3×213230122231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213230122241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15230723010 + ... + 15230723023.

It is an arithmetic number, because the mean of its divisors is an integer number (60922892068).

Almost surely, 2^213230122231 is an apocalyptic number.

213230122231 is a deficient number, since it is larger than the sum of its proper divisors (30461446041).

213230122231 is an equidigital number, since it uses as much as digits as its factorization.

213230122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30461446040.

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

Adding to 213230122231 its reverse (132221032312), we get a palindrome (345451154543).

The spelling of 213230122231 in words is "two hundred thirteen billion, two hundred thirty million, one hundred twenty-two thousand, two hundred thirty-one".