1123234653 has 4 divisors (see below), whose sum is σ = 1497646208. Its totient is φ = 748823100.

The previous prime is 1123234649. The next prime is 1123234681. The reversal of 1123234653 is 3564323211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3564323211 = 3 ⋅1188107737.

It is not a de Polignac number, because 1123234653 - 2² = 1123234649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123234653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123234603) 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, 187205773 + ... + 187205778.

It is an arithmetic number, because the mean of its divisors is an integer number (374411552).

Almost surely, 2^1123234653 is an apocalyptic number.

It is an amenable number.

1123234653 is a deficient number, since it is larger than the sum of its proper divisors (374411555).

1123234653 is an equidigital number, since it uses as much as digits as its factorization.

1123234653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374411554.

The product of its digits is 12960, while the sum is 30.

The square root of 1123234653 is about 33514.6930912398. The cubic root of 1123234653 is about 1039.4976163931.

Adding to 1123234653 its reverse (3564323211), we get a palindrome (4687557864).

The spelling of 1123234653 in words is "one billion, one hundred twenty-three million, two hundred thirty-four thousand, six hundred fifty-three".