1223095123 has 4 divisors (see below), whose sum is σ = 1223651520. Its totient is φ = 1222538728.

The previous prime is 1223095121. The next prime is 1223095129. The reversal of 1223095123 is 3215903221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3215903221 = 43 ⋅74788447.

It is a cyclic number.

It is not a de Polignac number, because 1223095123 - 2¹ = 1223095121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223095091 and 1223095100.

It is not an unprimeable number, because it can be changed into a prime (1223095121) 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 in 3 ways as a sum of consecutive naturals, for example, 274888 + ... + 279301.

It is an arithmetic number, because the mean of its divisors is an integer number (305912880).

Almost surely, 2^1223095123 is an apocalyptic number.

1223095123 is a deficient number, since it is larger than the sum of its proper divisors (556397).

1223095123 is an equidigital number, since it uses as much as digits as its factorization.

1223095123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556396.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1223095123 is about 34972.7768843139. The cubic root of 1223095123 is about 1069.4325820832.

Adding to 1223095123 its reverse (3215903221), we get a palindrome (4438998344).

The spelling of 1223095123 in words is "one billion, two hundred twenty-three million, ninety-five thousand, one hundred twenty-three".