1230655123 has 2 divisors, whose sum is σ = 1230655124. Its totient is φ = 1230655122.

The previous prime is 1230655117. The next prime is 1230655133. The reversal of 1230655123 is 3215560321.

It is a weak prime.

It is an emirp because it is prime and its reverse (3215560321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1230655123 - 2²⁵ = 1197100691 is a prime.

It is a super-2 number, since 2×1230655123² = 3029024063532290258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230655091 and 1230655100.

It is not a weakly prime, because it can be changed into another prime (1230655103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615327561 + 615327562.

It is an arithmetic number, because the mean of its divisors is an integer number (615327562).

Almost surely, 2^1230655123 is an apocalyptic number.

1230655123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230655123 is an equidigital number, since it uses as much as digits as its factorization.

1230655123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1230655123 is about 35080.6944486565. The cubic root of 1230655123 is about 1071.6314597276.

The spelling of 1230655123 in words is "one billion, two hundred thirty million, six hundred fifty-five thousand, one hundred twenty-three".