1123230013 has 4 divisors (see below), whose sum is σ = 1123301628. Its totient is φ = 1123158400.

The previous prime is 1123229993. The next prime is 1123230041. The reversal of 1123230013 is 3100323211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 772117369 + 351112644 = 27787^2 + 18738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123230013 - 2²⁹ = 586359101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123230083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006 + ... + 47407.

It is an arithmetic number, because the mean of its divisors is an integer number (280825407).

Almost surely, 2^1123230013 is an apocalyptic number.

It is an amenable number.

1123230013 is a deficient number, since it is larger than the sum of its proper divisors (71615).

1123230013 is an equidigital number, since it uses as much as digits as its factorization.

1123230013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71614.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1123230013 is about 33514.6238677984. The cubic root of 1123230013 is about 1039.4961850283.

Adding to 1123230013 its reverse (3100323211), we get a palindrome (4223553224).

The spelling of 1123230013 in words is "one billion, one hundred twenty-three million, two hundred thirty thousand, thirteen".