2305220123 has 2 divisors, whose sum is σ = 2305220124. Its totient is φ = 2305220122.

The previous prime is 2305220101. The next prime is 2305220147. The reversal of 2305220123 is 3210225032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2305220123 - 2⁸ = 2305219867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2305220095 and 2305220104.

It is not a weakly prime, because it can be changed into another prime (2305220173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152610061 + 1152610062.

It is an arithmetic number, because the mean of its divisors is an integer number (1152610062).

Almost surely, 2^2305220123 is an apocalyptic number.

2305220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305220123 is an equidigital number, since it uses as much as digits as its factorization.

2305220123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2305220123 is about 48012.7079323797. The cubic root of 2305220123 is about 1321.0040040963.

Adding to 2305220123 its reverse (3210225032), we get a palindrome (5515445155).

The spelling of 2305220123 in words is "two billion, three hundred five million, two hundred twenty thousand, one hundred twenty-three".