2343123221 has 2 divisors, whose sum is σ = 2343123222. Its totient is φ = 2343123220.

The previous prime is 2343123199. The next prime is 2343123241. The reversal of 2343123221 is 1223213432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2341204996 + 1918225 = 48386^2 + 1385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2343123221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2343123241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1171561610 + 1171561611.

It is an arithmetic number, because the mean of its divisors is an integer number (1171561611).

Almost surely, 2^2343123221 is an apocalyptic number.

It is an amenable number.

2343123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2343123221 is an equidigital number, since it uses as much as digits as its factorization.

2343123221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 2343123221 is about 48405.8180490734. The cubic root of 2343123221 is about 1328.2047916636.

Adding to 2343123221 its reverse (1223213432), we get a palindrome (3566336653).

The spelling of 2343123221 in words is "two billion, three hundred forty-three million, one hundred twenty-three thousand, two hundred twenty-one".