1113001123 has 4 divisors (see below), whose sum is σ = 1198616608. Its totient is φ = 1027385640.

The previous prime is 1113001117. The next prime is 1113001147. The reversal of 1113001123 is 3211003111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211003111 = 79 ⋅40645609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113001123 is a prime.

It is a super-2 number, since 2×1113001123² = 2477542999598522258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 85615471 = 1113001123 / (1 + 1 + 1 + 3 + 0 + 0 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113001163) 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, 42807723 + ... + 42807748.

It is an arithmetic number, because the mean of its divisors is an integer number (299654152).

Almost surely, 2^1113001123 is an apocalyptic number.

1113001123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1113001123 is a deficient number, since it is larger than the sum of its proper divisors (85615485).

1113001123 is an equidigital number, since it uses as much as digits as its factorization.

1113001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85615484.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113001123 is about 33361.6714659203. The cubic root of 1113001123 is about 1036.3311066188.

Adding to 1113001123 its reverse (3211003111), we get a palindrome (4324004234).

The spelling of 1113001123 in words is "one billion, one hundred thirteen million, one thousand, one hundred twenty-three".