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23133131300 = 2252231331313
BaseRepresentation
bin10101100010110101…
…111001001000100100
32012201012001211101202
4111202311321020210
5334334040200200
614343251142032
71446155241326
oct254265711044
965635054352
1023133131300
1198a105aa34
1245972a4918
132248832c96
141196465616
15905d5b1d5
hex562d79224

23133131300 has 18 divisors (see below), whose sum is σ = 50198895138. Its totient is φ = 9253252480.

The previous prime is 23133131299. The next prime is 23133131303. The reversal of 23133131300 is 313133132.

It can be written as a sum of positive squares in 3 ways, for example, as 281367076 + 22851764224 = 16774^2 + 151168^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (23133131303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115665557 + ... + 115665756.

Almost surely, 223133131300 is an apocalyptic number.

23133131300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23133131300 is an abundant number, since it is smaller than the sum of its proper divisors (27065763838).

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

23133131300 is a wasteful number, since it uses less digits than its factorization.

23133131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231331327 (or 231331320 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 23133131300 its reverse (313133132), we get a palindrome (23446264432).

The spelling of 23133131300 in words is "twenty-three billion, one hundred thirty-three million, one hundred thirty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 231331313 462662626 925325252 1156656565 2313313130 4626626260 5783282825 11566565650 23133131300