1123023439 has 2 divisors, whose sum is σ = 1123023440. Its totient is φ = 1123023438.

The previous prime is 1123023427. The next prime is 1123023469. The reversal of 1123023439 is 9343203211.

It is a weak prime.

It is an emirp because it is prime and its reverse (9343203211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123023439 is a prime.

It is a super-2 number, since 2×1123023439² = 2522363289086773442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123023469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561511719 + 561511720.

It is an arithmetic number, because the mean of its divisors is an integer number (561511720).

Almost surely, 2^1123023439 is an apocalyptic number.

1123023439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123023439 is an equidigital number, since it uses as much as digits as its factorization.

1123023439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1123023439 is about 33511.5418773890. The cubic root of 1123023439 is about 1039.4324563032.

The spelling of 1123023439 in words is "one billion, one hundred twenty-three million, twenty-three thousand, four hundred thirty-nine".