23121320303 has 8 divisors (see below), whose sum is σ = 24043841280. Its totient is φ = 22207148320.

The previous prime is 23121320269. The next prime is 23121320347. The reversal of 23121320303 is 30302312132.

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 23121320303 - 2³⁴ = 5941451119 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 (23121320503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2081600 + ... + 2092677.

It is an arithmetic number, because the mean of its divisors is an integer number (3005480160).

Almost surely, 2^23121320303 is an apocalyptic number.

23121320303 is a deficient number, since it is larger than the sum of its proper divisors (922520977).

23121320303 is a wasteful number, since it uses less digits than its factorization.

23121320303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174497.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23121320303 its reverse (30302312132), we get a palindrome (53423632435).

The spelling of 23121320303 in words is "twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, three hundred three".