123011303 has 4 divisors (see below), whose sum is σ = 130247280. Its totient is φ = 115775328.

The previous prime is 123011299. The next prime is 123011309. The reversal of 123011303 is 303110321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303110321 = 4651 ⋅65171.

It is a cyclic number.

It is not a de Polignac number, because 123011303 - 2² = 123011299 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 (123011309) 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, 3617963 + ... + 3617996.

It is an arithmetic number, because the mean of its divisors is an integer number (32561820).

Almost surely, 2^123011303 is an apocalyptic number.

123011303 is a deficient number, since it is larger than the sum of its proper divisors (7235977).

123011303 is an equidigital number, since it uses as much as digits as its factorization.

123011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235976.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 123011303 is about 11091.0460732971. The cubic root of 123011303 is about 497.3342164550.

Adding to 123011303 its reverse (303110321), we get a palindrome (426121624).

The spelling of 123011303 in words is "one hundred twenty-three million, eleven thousand, three hundred three".