123111321303 has 8 divisors (see below), whose sum is σ = 164180946816. Its totient is φ = 82057955000.

The previous prime is 123111321299. The next prime is 123111321317. The reversal of 123111321303 is 303123111321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123111321303 - 2² = 123111321299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123111321303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111321323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4047123 + ... + 4077428.

It is an arithmetic number, because the mean of its divisors is an integer number (20522618352).

Almost surely, 2^123111321303 is an apocalyptic number.

123111321303 is a deficient number, since it is larger than the sum of its proper divisors (41069625513).

123111321303 is an equidigital number, since it uses as much as digits as its factorization.

123111321303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129605.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 123111321303 its reverse (303123111321), we get a palindrome (426234432624).

The spelling of 123111321303 in words is "one hundred twenty-three billion, one hundred eleven million, three hundred twenty-one thousand, three hundred three".