1123234165 has 4 divisors (see below), whose sum is σ = 1347881004. Its totient is φ = 898587328.

The previous prime is 1123234121. The next prime is 1123234171. The reversal of 1123234165 is 5614323211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5614323211 = 7 ⋅802046173.

It can be written as a sum of positive squares in 2 ways, for example, as 816073489 + 307160676 = 28567^2 + 17526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123234165 - 2⁹ = 1123233653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112323412 + ... + 112323421.

It is an arithmetic number, because the mean of its divisors is an integer number (336970251).

Almost surely, 2^1123234165 is an apocalyptic number.

It is an amenable number.

1123234165 is a deficient number, since it is larger than the sum of its proper divisors (224646839).

1123234165 is an equidigital number, since it uses as much as digits as its factorization.

1123234165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224646838.

The product of its digits is 4320, while the sum is 28.

The square root of 1123234165 is about 33514.6858108501. The cubic root of 1123234165 is about 1039.4974658532.

Adding to 1123234165 its reverse (5614323211), we get a palindrome (6737557376).

The spelling of 1123234165 in words is "one billion, one hundred twenty-three million, two hundred thirty-four thousand, one hundred sixty-five".