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123023130121 = 178387188611
BaseRepresentation
bin111001010010010111…
…1111111111000001001
3102202112200201112101201
41302210233333320021
54003422410130441
6132303244344201
711613425231563
oct1624457777011
9382480645351
10123023130121
11481a0393571
121ba14245061
13b7a7609968
145d50a50333
1533005b7c31
hex1ca4bffe09

123023130121 has 8 divisors (see below), whose sum is σ = 131829181344. Its totient is φ = 114391456320.

The previous prime is 123023130047. The next prime is 123023130127. The reversal of 123023130121 is 121031320321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123023130121 - 29 = 123023129609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123023130127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43592895 + ... + 43595716.

It is an arithmetic number, because the mean of its divisors is an integer number (16478647668).

Almost surely, 2123023130121 is an apocalyptic number.

It is an amenable number.

123023130121 is a deficient number, since it is larger than the sum of its proper divisors (8806051223).

123023130121 is an equidigital number, since it uses as much as digits as its factorization.

123023130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87188711.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123023130121 its reverse (121031320321), we get a palindrome (244054450442).

The spelling of 123023130121 in words is "one hundred twenty-three billion, twenty-three million, one hundred thirty thousand, one hundred twenty-one".

Divisors: 1 17 83 1411 87188611 1482206387 7236654713 123023130121