1123103013 has 4 divisors (see below), whose sum is σ = 1497470688. Its totient is φ = 748735340.

The previous prime is 1123102997. The next prime is 1123103027. The reversal of 1123103013 is 3103013211.

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: 3103013211 = 3 ⋅1034337737.

It is a cyclic number.

It is not a de Polignac number, because 1123103013 - 2⁴ = 1123102997 is a prime.

It is a super-2 number, since 2×1123103013² = 2522720755619356338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123102983 and 1123103001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123104013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187183833 + ... + 187183838.

It is an arithmetic number, because the mean of its divisors is an integer number (374367672).

Almost surely, 2^1123103013 is an apocalyptic number.

It is an amenable number.

1123103013 is a deficient number, since it is larger than the sum of its proper divisors (374367675).

1123103013 is an equidigital number, since it uses as much as digits as its factorization.

1123103013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374367674.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1123103013 is about 33512.7291189482. The cubic root of 1123103013 is about 1039.4570060564.

Adding to 1123103013 its reverse (3103013211), we get a palindrome (4226116224).

The spelling of 1123103013 in words is "one billion, one hundred twenty-three million, one hundred three thousand, thirteen".