1230123119 has 2 divisors, whose sum is σ = 1230123120. Its totient is φ = 1230123118.

The previous prime is 1230123109. The next prime is 1230123157. The reversal of 1230123119 is 9113210321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230123119 - 2¹⁶ = 1230057583 is a prime.

It is a super-2 number, since 2×1230123119² = 3026405775796576322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230123094 and 1230123103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230123109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061559 + 615061560.

It is an arithmetic number, because the mean of its divisors is an integer number (615061560).

Almost surely, 2^1230123119 is an apocalyptic number.

1230123119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123119 is an equidigital number, since it uses as much as digits as its factorization.

1230123119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1230123119 is about 35073.1110539114. Note that the first 3 decimals coincide. The cubic root of 1230123119 is about 1071.4770177603.

The spelling of 1230123119 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, one hundred nineteen".