23121131132330 has 32 divisors (see below), whose sum is σ = 51887421555840. Its totient is φ = 7206586326720.

The previous prime is 23121131132321. The next prime is 23121131132353. The reversal of 23121131132330 is 3323113112132.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23121131132330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15013720745 + ... + 15013722284.

It is an arithmetic number, because the mean of its divisors is an integer number (1621481923620).

Almost surely, 2^{23121131132330} is an apocalyptic number.

23121131132330 is an abundant number, since it is smaller than the sum of its proper divisors (28766290423510).

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

23121131132330 is a wasteful number, since it uses less digits than its factorization.

23121131132330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30027443054.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 23121131132330 its reverse (3323113112132), we get a palindrome (26444244244462).

It can be divided in two parts, 2312113 and 1132330, that added together give a palindrome (3444443).

The spelling of 23121131132330 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred thirty".