1123111003 has 4 divisors (see below), whose sum is σ = 1283555440. Its totient is φ = 962666568.

The previous prime is 1123110979. The next prime is 1123111007. The reversal of 1123111003 is 3001113211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123111003 is a prime.

It is a super-2 number, since 2×1123111003² = 2522756650119332018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123111007) 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, 80222208 + ... + 80222221.

It is an arithmetic number, because the mean of its divisors is an integer number (320888860).

Almost surely, 2^1123111003 is an apocalyptic number.

1123111003 is a deficient number, since it is larger than the sum of its proper divisors (160444437).

1123111003 is an equidigital number, since it uses as much as digits as its factorization.

1123111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160444436.

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

The square root of 1123111003 is about 33512.8483271715. The cubic root of 1123111003 is about 1039.4594710252.

Adding to 1123111003 its reverse (3001113211), we get a palindrome (4124224214).

The spelling of 1123111003 in words is "one billion, one hundred twenty-three million, one hundred eleven thousand, three".