23121212313 has 8 divisors (see below), whose sum is σ = 30834144000. Its totient is φ = 15411211088.

The previous prime is 23121212281. The next prime is 23121212333. The reversal of 23121212313 is 31321212132.

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 23121212313 - 2⁵ = 23121212281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23121212313.

It is not an unprimeable number, because it can be changed into a prime (23121212333) 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, 714138 + ... + 745811.

It is an arithmetic number, because the mean of its divisors is an integer number (3854268000).

Almost surely, 2^23121212313 is an apocalyptic number.

It is an amenable number.

23121212313 is a deficient number, since it is larger than the sum of its proper divisors (7712931687).

23121212313 is a wasteful number, since it uses less digits than its factorization.

23121212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465231.

The product of its digits is 432, while the sum is 21.

Adding to 23121212313 its reverse (31321212132), we get a palindrome (54442424445).

The spelling of 23121212313 in words is "twenty-three billion, one hundred twenty-one million, two hundred twelve thousand, three hundred thirteen".