230312123221 has 4 divisors (see below), whose sum is σ = 230315449132. Its totient is φ = 230308797312.

The previous prime is 230312123213. The next prime is 230312123263. The reversal of 230312123221 is 122321213032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33074878225 + 197237244996 = 181865^2 + 444114^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312123221 - 2³ = 230312123213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230312123192 and 230312123201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230312129221) 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, 1556826 + ... + 1698331.

It is an arithmetic number, because the mean of its divisors is an integer number (57578862283).

Almost surely, 2^230312123221 is an apocalyptic number.

It is an amenable number.

230312123221 is a deficient number, since it is larger than the sum of its proper divisors (3325911).

230312123221 is an equidigital number, since it uses as much as digits as its factorization.

230312123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325910.

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

Adding to 230312123221 its reverse (122321213032), we get a palindrome (352633336253).

The spelling of 230312123221 in words is "two hundred thirty billion, three hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".