123303013 has 4 divisors (see below), whose sum is σ = 124130700. Its totient is φ = 122475328.

The previous prime is 123302969. The next prime is 123303017. The reversal of 123303013 is 310303321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26811684 + 96491329 = 5178^2 + 9823^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123303013 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 (123303017) 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, 413620 + ... + 413917.

It is an arithmetic number, because the mean of its divisors is an integer number (31032675).

Almost surely, 2^123303013 is an apocalyptic number.

It is an amenable number.

123303013 is a deficient number, since it is larger than the sum of its proper divisors (827687).

123303013 is an equidigital number, since it uses as much as digits as its factorization.

123303013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827686.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 123303013 is about 11104.1889843428. The cubic root of 123303013 is about 497.7270335712.

Adding to 123303013 its reverse (310303321), we get a palindrome (433606334).

It can be divided in two parts, 12 and 3303013, that multiplied together give a triangular number (39636156 = T₈₉₀₃).

The spelling of 123303013 in words is "one hundred twenty-three million, three hundred three thousand, thirteen".