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23123243130 = 23513211280997
BaseRepresentation
bin10101100010010000…
…001011000001111010
32012200111110110101020
4111202100023001322
5334324022240010
614342255203310
71446005216001
oct254220130172
965614413336
1023123243130
119896516899
124593b16536
1322467802b0
14119500dc38
15905056470
hex56240b07a

23123243130 has 64 divisors (see below), whose sum is σ = 60048148608. Its totient is φ = 5664879360.

The previous prime is 23123243051. The next prime is 23123243173. The reversal of 23123243130 is 3134232132.

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 23123243130.

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, 58209 + ... + 222788.

It is an arithmetic number, because the mean of its divisors is an integer number (938252322).

Almost surely, 223123243130 is an apocalyptic number.

23123243130 is an abundant number, since it is smaller than the sum of its proper divisors (36924905478).

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

23123243130 is a wasteful number, since it uses less digits than its factorization.

23123243130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281231.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 23123243130 its reverse (3134232132), we get a palindrome (26257475262).

The spelling of 23123243130 in words is "twenty-three billion, one hundred twenty-three million, two hundred forty-three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 211 390 422 633 1055 1266 2110 2743 3165 5486 6330 8229 13715 16458 27430 41145 82290 280997 561994 842991 1404985 1685982 2809970 3652961 4214955 7305922 8429910 10958883 18264805 21917766 36529610 54794415 59290367 109588830 118580734 177871101 296451835 355742202 592903670 770774771 889355505 1541549542 1778711010 2312324313 3853873855 4624648626 7707747710 11561621565 23123243130