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23100312100 = 22521942128879
BaseRepresentation
bin10101100000111000…
…101100101000100100
32012121220022102220211
4111200320230220210
5334302134441400
614340115505204
71445306261455
oct254070545044
965556272824
1023100312100
119884584428
1245882b8204
132241ab1a38
141191d6112c
15903026dba
hex560e2ca24

23100312100 has 72 divisors (see below), whose sum is σ = 52893142400. Its totient is φ = 8732707200.

The previous prime is 23100312091. The next prime is 23100312143. The reversal of 23100312100 is 121300132.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 785461 + ... + 814339.

Almost surely, 223100312100 is an apocalyptic number.

23100312100 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 23100312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26446571200).

23100312100 is an abundant number, since it is smaller than the sum of its proper divisors (29792830300).

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

23100312100 is a wasteful number, since it uses less digits than its factorization.

23100312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29333 (or 29326 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23100312100 its reverse (121300132), we get a palindrome (23221612232).

The spelling of 23100312100 in words is "twenty-three billion, one hundred million, three hundred twelve thousand, one hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 380 421 475 842 950 1684 1900 2105 4210 7999 8420 10525 15998 21050 28879 31996 39995 42100 57758 79990 115516 144395 159980 199975 288790 399950 548701 577580 721975 799900 1097402 1443950 2194804 2743505 2887900 5487010 10974020 12158059 13717525 24316118 27435050 48632236 54870100 60790295 121580590 231003121 243161180 303951475 462006242 607902950 924012484 1155015605 1215805900 2310031210 4620062420 5775078025 11550156050 23100312100