1123503011 has 8 divisors (see below), whose sum is σ = 1199616000. Its totient is φ = 1049662152.

The previous prime is 1123502971. The next prime is 1123503013. The reversal of 1123503011 is 1103053211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123503011 - 2¹⁰ = 1123501987 is a prime.

It is a super-2 number, since 2×1123503011² = 2524518031452132242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123503013) 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 7 ways as a sum of consecutive naturals, for example, 567011 + ... + 568988.

It is an arithmetic number, because the mean of its divisors is an integer number (149952000).

Almost surely, 2^1123503011 is an apocalyptic number.

1123503011 is a deficient number, since it is larger than the sum of its proper divisors (76112989).

1123503011 is a wasteful number, since it uses less digits than its factorization.

1123503011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136065.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1123503011 is about 33518.6964394500. The cubic root of 1123503011 is about 1039.5803937800.

Adding to 1123503011 its reverse (1103053211), we get a palindrome (2226556222).

The spelling of 1123503011 in words is "one billion, one hundred twenty-three million, five hundred three thousand, eleven".