403313123 has 2 divisors, whose sum is σ = 403313124. Its totient is φ = 403313122.

The previous prime is 403313111. The next prime is 403313137. The reversal of 403313123 is 321313304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403313123 - 2⁴ = 403313107 is a prime.

It is a super-2 number, since 2×403313123² = 325322950368026258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 403313095 and 403313104.

It is not a weakly prime, because it can be changed into another prime (403313143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201656561 + 201656562.

It is an arithmetic number, because the mean of its divisors is an integer number (201656562).

Almost surely, 2^403313123 is an apocalyptic number.

403313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

403313123 is an equidigital number, since it uses as much as digits as its factorization.

403313123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 403313123 is about 20082.6572693954. The cubic root of 403313123 is about 738.8349838435.

Adding to 403313123 its reverse (321313304), we get a palindrome (724626427).

The spelling of 403313123 in words is "four hundred three million, three hundred thirteen thousand, one hundred twenty-three".