1123103253 has 4 divisors (see below), whose sum is σ = 1497471008. Its totient is φ = 748735500.

The previous prime is 1123103251. The next prime is 1123103257. The reversal of 1123103253 is 3523013211.

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: 3523013211 = 3 ⋅1174337737.

It is not a de Polignac number, because 1123103253 - 2¹ = 1123103251 is a prime.

It is a super-2 number, since 2×1123103253² = 2522721833798364018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123103251) 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, 187183873 + ... + 187183878.

It is an arithmetic number, because the mean of its divisors is an integer number (374367752).

Almost surely, 2^1123103253 is an apocalyptic number.

It is an amenable number.

1123103253 is a deficient number, since it is larger than the sum of its proper divisors (374367755).

1123103253 is an equidigital number, since it uses as much as digits as its factorization.

1123103253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374367754.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1123103253 is about 33512.7326996770. The cubic root of 1123103253 is about 1039.4570800982.

Adding to 1123103253 its reverse (3523013211), we get a palindrome (4646116464).

The spelling of 1123103253 in words is "one billion, one hundred twenty-three million, one hundred three thousand, two hundred fifty-three".