1123312203 has 48 divisors (see below), whose sum is σ = 1841845824. Its totient is φ = 654508800.

The previous prime is 1123312199. The next prime is 1123312207. The reversal of 1123312203 is 3022133211.

1123312203 is a `hidden beast` number, since 112 + 331 + 220 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1123312199) and next prime (1123312207).

It is not a de Polignac number, because 1123312203 - 2² = 1123312199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123312207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269725 + ... + 273857.

It is an arithmetic number, because the mean of its divisors is an integer number (38371788).

Almost surely, 2^1123312203 is an apocalyptic number.

1123312203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1123312203 is a deficient number, since it is larger than the sum of its proper divisors (718533621).

1123312203 is a wasteful number, since it uses less digits than its factorization.

1123312203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276 (or 4273 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1123312203 is about 33515.8500265173. The cubic root of 1123312203 is about 1039.5215387275.

Adding to 1123312203 its reverse (3022133211), we get a palindrome (4145445414).

It can be divided in two parts, 11233 and 12203, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 1123312203 in words is "one billion, one hundred twenty-three million, three hundred twelve thousand, two hundred three".