23121022303 has 4 divisors (see below), whose sum is σ = 23274141808. Its totient is φ = 22967902800.

The previous prime is 23121022291. The next prime is 23121022349. The reversal of 23121022303 is 30322012132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121022303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121020303) 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, 76559526 + ... + 76559827.

It is an arithmetic number, because the mean of its divisors is an integer number (5818535452).

Almost surely, 2^23121022303 is an apocalyptic number.

23121022303 is a deficient number, since it is larger than the sum of its proper divisors (153119505).

23121022303 is a wasteful number, since it uses less digits than its factorization.

23121022303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153119504.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23121022303 its reverse (30322012132), we get a palindrome (53443034435).

The spelling of 23121022303 in words is "twenty-three billion, one hundred twenty-one million, twenty-two thousand, three hundred three".