123331312303 has 4 divisors (see below), whose sum is σ = 123332445880. Its totient is φ = 123330178728.

The previous prime is 123331312289. The next prime is 123331312331. The reversal of 123331312303 is 303213133321.

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

It is a cyclic number.

It is not a de Polignac number, because 123331312303 - 2⁵ = 123331312271 is a prime.

It is a super-2 number, since 2×123331312303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331312903) 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, 383925 + ... + 627742.

It is an arithmetic number, because the mean of its divisors is an integer number (30833111470).

Almost surely, 2^123331312303 is an apocalyptic number.

123331312303 is a deficient number, since it is larger than the sum of its proper divisors (1133577).

123331312303 is a wasteful number, since it uses less digits than its factorization.

123331312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133576.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 123331312303 its reverse (303213133321), we get a palindrome (426544445624).

The spelling of 123331312303 in words is "one hundred twenty-three billion, three hundred thirty-one million, three hundred twelve thousand, three hundred three".