123303121 has 4 divisors (see below), whose sum is σ = 124864000. Its totient is φ = 121742244.

The previous prime is 123303119. The next prime is 123303133. The reversal of 123303121 is 121303321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123303121 - 2¹ = 123303119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123303095 and 123303104.

It is not an unprimeable number, because it can be changed into a prime (123303221) 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, 780321 + ... + 780478.

It is an arithmetic number, because the mean of its divisors is an integer number (31216000).

Almost surely, 2^123303121 is an apocalyptic number.

It is an amenable number.

123303121 is a deficient number, since it is larger than the sum of its proper divisors (1560879).

123303121 is an equidigital number, since it uses as much as digits as its factorization.

123303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560878.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123303121 is about 11104.1938473714. The cubic root of 123303121 is about 497.7271788894.

Adding to 123303121 its reverse (121303321), we get a palindrome (244606442).

It can be divided in two parts, 12330 and 3121, that added together give a palindrome (15451).

The spelling of 123303121 in words is "one hundred twenty-three million, three hundred three thousand, one hundred twenty-one".