123131303 has 4 divisors (see below), whose sum is σ = 127377240. Its totient is φ = 118885368.

The previous prime is 123131293. The next prime is 123131329. The reversal of 123131303 is 303131321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123131303 is a prime.

It is a super-2 number, since 2×123131303² = 30322635556955618, which 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 (123133303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122925 + ... + 2122982.

It is an arithmetic number, because the mean of its divisors is an integer number (31844310).

Almost surely, 2^123131303 is an apocalyptic number.

123131303 is a deficient number, since it is larger than the sum of its proper divisors (4245937).

123131303 is an equidigital number, since it uses as much as digits as its factorization.

123131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245936.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 123131303 is about 11096.4545238558. The cubic root of 123131303 is about 497.4958837399.

Adding to 123131303 its reverse (303131321), we get a palindrome (426262624).

The spelling of 123131303 in words is "one hundred twenty-three million, one hundred thirty-one thousand, three hundred three".