Search a number
-
+
23121308088 = 2336193153127
BaseRepresentation
bin10101100010001000…
…110010100110111000
32012200100211011000000
4111202020302212320
5334323023324323
614342145513000
71445652606324
oct254210624670
965610734000
1023121308088
119895414a8a
124593342760
1322462535b8
141194a68984
15904cc2e43
hex5622329b8

23121308088 has 448 divisors, whose sum is σ = 72526233600. Its totient is φ = 6878027520.

The previous prime is 23121308083. The next prime is 23121308113. The reversal of 23121308088 is 88080312132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121308081) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 182057481 + ... + 182057607.

Almost surely, 223121308088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121308088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36263116800).

23121308088 is an abundant number, since it is smaller than the sum of its proper divisors (49404925512).

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

23121308088 is a wasteful number, since it uses less digits than its factorization.

23121308088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 23121308088 in words is "twenty-three billion, one hundred twenty-one million, three hundred eight thousand, eighty-eight".