23121031323000 has 128 divisors (see below), whose sum is σ = 77686665376320. Its totient is φ = 5691330777600.

The previous prime is 23121031322957. The next prime is 23121031323001. The reversal of 23121031323000 is 32313012132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121031323001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296384479 + ... + 296462478.

Almost surely, 2^{23121031323000} is an apocalyptic number.

23121031323000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121031323000 is an abundant number, since it is smaller than the sum of its proper divisors (54565634053320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23121031323000 is a wasteful number, since it uses less digits than its factorization.

23121031323000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592846994 (or 592846980 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23121031323000 its reverse (32313012132), we get a palindrome (23153344335132).

The spelling of 23121031323000 in words is "twenty-three trillion, one hundred twenty-one billion, thirty-one million, three hundred twenty-three thousand".