1123111203 has 8 divisors (see below), whose sum is σ = 1514307600. Its totient is φ = 740327808.

The previous prime is 1123111193. The next prime is 1123111207. The reversal of 1123111203 is 3021113211.

It is a happy number.

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

It is not a de Polignac number, because 1123111203 - 2¹⁰ = 1123110179 is a prime.

It is a super-2 number, since 2×1123111203² = 2522757548608214418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123111207) 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 7 ways as a sum of consecutive naturals, for example, 2102938 + ... + 2103471.

It is an arithmetic number, because the mean of its divisors is an integer number (189288450).

Almost surely, 2^1123111203 is an apocalyptic number.

1123111203 is a deficient number, since it is larger than the sum of its proper divisors (391196397).

1123111203 is an equidigital number, since it uses as much as digits as its factorization.

1123111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206501.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1123111203 is about 33512.8513111015. The cubic root of 1123111203 is about 1039.4595327264.

Adding to 1123111203 its reverse (3021113211), we get a palindrome (4144224414).

The spelling of 1123111203 in words is "one billion, one hundred twenty-three million, one hundred eleven thousand, two hundred three".