1123451303 has 4 divisors (see below), whose sum is σ = 1209870648. Its totient is φ = 1037031960.

The previous prime is 1123451297. The next prime is 1123451309. The reversal of 1123451303 is 3031543211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3031543211 = 83 ⋅36524617.

It is an interprime number because it is at equal distance from previous prime (1123451297) and next prime (1123451309).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123451303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123451309) 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, 43209653 + ... + 43209678.

It is an arithmetic number, because the mean of its divisors is an integer number (302467662).

Almost surely, 2^1123451303 is an apocalyptic number.

1123451303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1123451303 is a deficient number, since it is larger than the sum of its proper divisors (86419345).

1123451303 is an equidigital number, since it uses as much as digits as its factorization.

1123451303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86419344.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1123451303 is about 33517.9250998626. The cubic root of 1123451303 is about 1039.5644450176.

Adding to 1123451303 its reverse (3031543211), we get a palindrome (4154994514).

The spelling of 1123451303 in words is "one billion, one hundred twenty-three million, four hundred fifty-one thousand, three hundred three".