305422123 has 2 divisors, whose sum is σ = 305422124. Its totient is φ = 305422122.

The previous prime is 305422111. The next prime is 305422189. The reversal of 305422123 is 321224503.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305422123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305422094 and 305422103.

It is not a weakly prime, because it can be changed into another prime (305422193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152711061 + 152711062.

It is an arithmetic number, because the mean of its divisors is an integer number (152711062).

Almost surely, 2^305422123 is an apocalyptic number.

305422123 is a deficient number, since it is larger than the sum of its proper divisors (1).

305422123 is an equidigital number, since it uses as much as digits as its factorization.

305422123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 305422123 is about 17476.3303642384. The cubic root of 305422123 is about 673.4419468016.

Adding to 305422123 its reverse (321224503), we get a palindrome (626646626).

The spelling of 305422123 in words is "three hundred five million, four hundred twenty-two thousand, one hundred twenty-three".