321113123 has 2 divisors, whose sum is σ = 321113124. Its totient is φ = 321113122.

The previous prime is 321113113. The next prime is 321113137. The reversal of 321113123 is 321311123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321113123 - 2¹² = 321109027 is a prime.

It is a super-3 number, since 3×321113123³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (321113113) 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 as a sum of consecutive naturals, namely, 160556561 + 160556562.

It is an arithmetic number, because the mean of its divisors is an integer number (160556562).

Almost surely, 2^321113123 is an apocalyptic number.

321113123 is a deficient number, since it is larger than the sum of its proper divisors (1).

321113123 is an equidigital number, since it uses as much as digits as its factorization.

321113123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 321113123 is about 17919.6295441619. The cubic root of 321113123 is about 684.7825498361.

Adding to 321113123 its reverse (321311123), we get a palindrome (642424246).

The spelling of 321113123 in words is "three hundred twenty-one million, one hundred thirteen thousand, one hundred twenty-three".