2312423221 has 2 divisors, whose sum is σ = 2312423222. Its totient is φ = 2312423220.

The previous prime is 2312423213. The next prime is 2312423279. The reversal of 2312423221 is 1223242132.

2312423221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2266712100 + 45711121 = 47610^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312423221 - 2³ = 2312423213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2312423192 and 2312423201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312403221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156211610 + 1156211611.

It is an arithmetic number, because the mean of its divisors is an integer number (1156211611).

Almost surely, 2^2312423221 is an apocalyptic number.

It is an amenable number.

2312423221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312423221 is an equidigital number, since it uses as much as digits as its factorization.

2312423221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 2312423221 is about 48087.6618375234. The cubic root of 2312423221 is about 1322.3784827653.

Adding to 2312423221 its reverse (1223242132), we get a palindrome (3535665353).

The spelling of 2312423221 in words is "two billion, three hundred twelve million, four hundred twenty-three thousand, two hundred twenty-one".