23121302321 has 8 divisors (see below), whose sum is σ = 25089941184. Its totient is φ = 21179817360.

The previous prime is 23121302317. The next prime is 23121302329. The reversal of 23121302321 is 12320312132.

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

It is not a de Polignac number, because 23121302321 - 2² = 23121302317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23121302293 and 23121302302.

It is not an unprimeable number, because it can be changed into a prime (23121302329) 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, 6786701 + ... + 6790106.

It is an arithmetic number, because the mean of its divisors is an integer number (3136242648).

Almost surely, 2^23121302321 is an apocalyptic number.

It is an amenable number.

23121302321 is a deficient number, since it is larger than the sum of its proper divisors (1968638863).

23121302321 is a wasteful number, since it uses less digits than its factorization.

23121302321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13576951.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23121302321 its reverse (12320312132), we get a palindrome (35441614453).

The spelling of 23121302321 in words is "twenty-three billion, one hundred twenty-one million, three hundred two thousand, three hundred twenty-one".