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23011300123 = 73287328589
BaseRepresentation
bin10101011011100101…
…001001001100011011
32012101200211011102221
4111123211021030123
5334111343100443
614323220004511
71443145552360
oct253345111433
965350734387
1023011300123
119839308409
124562530737
132229517726
1411841d0467
158ea2e2eed
hex55b94931b

23011300123 has 4 divisors (see below), whose sum is σ = 26298628720. Its totient is φ = 19723971528.

The previous prime is 23011300087. The next prime is 23011300127. The reversal of 23011300123 is 32100311032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23011300123 - 213 = 23011291931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23011300097 and 23011300106.

It is not an unprimeable number, because it can be changed into a prime (23011300127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643664288 + ... + 1643664301.

It is an arithmetic number, because the mean of its divisors is an integer number (6574657180).

Almost surely, 223011300123 is an apocalyptic number.

23011300123 is a deficient number, since it is larger than the sum of its proper divisors (3287328597).

23011300123 is an equidigital number, since it uses as much as digits as its factorization.

23011300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287328596.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 23011300123 its reverse (32100311032), we get a palindrome (55111611155).

The spelling of 23011300123 in words is "twenty-three billion, eleven million, three hundred thousand, one hundred twenty-three".

Divisors: 1 7 3287328589 23011300123