23121302000 has 160 divisors (see below), whose sum is σ = 58681494144. Its totient is φ = 8794368000.

The previous prime is 23121301999. The next prime is 23121302053. The reversal of 23121302000 is 20312132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8324612 + ... + 8327388.

Almost surely, 2^23121302000 is an apocalyptic number.

23121302000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121302000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29340747072).

23121302000 is an abundant number, since it is smaller than the sum of its proper divisors (35560192144).

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

23121302000 is a wasteful number, since it uses less digits than its factorization.

23121302000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 23121302000 its reverse (20312132), we get a palindrome (23141614132).

The spelling of 23121302000 in words is "twenty-three billion, one hundred twenty-one million, three hundred two thousand".