23121303 has 8 divisors (see below), whose sum is σ = 31410288. Its totient is φ = 15123264.

The previous prime is 23121283. The next prime is 23121331. The reversal of 23121303 is 30312132.

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

It is not a de Polignac number, because 23121303 - 2⁸ = 23121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121103) 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 in 7 ways as a sum of consecutive naturals, for example, 72550 + ... + 72867.

It is an arithmetic number, because the mean of its divisors is an integer number (3926286).

Almost surely, 2^23121303 is an apocalyptic number.

23121303 is a deficient number, since it is larger than the sum of its proper divisors (8288985).

23121303 is a wasteful number, since it uses less digits than its factorization.

23121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145473.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23121303 is about 4808.4616042972. The cubic root of 23121303 is about 284.8857775582.

Adding to 23121303 its reverse (30312132), we get a palindrome (53433435).

The spelling of 23121303 in words is "twenty-three million, one hundred twenty-one thousand, three hundred three".