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23103105 = 351540207
BaseRepresentation
bin101100000100…
…0011010000001
31121110202111120
41120020122001
521403244410
62143102453
7400241664
oct130103201
947422446
1023103105
111204a783
1278a1a29
134a2b99c
1430d56db
152065570
hex1608681

23103105 has 8 divisors (see below), whose sum is σ = 36964992. Its totient is φ = 12321648.

The previous prime is 23103103. The next prime is 23103121. The reversal of 23103105 is 50130132.

It is a happy number.

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

It is not a de Polignac number, because 23103105 - 21 = 23103103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1540207 = 23103105 / (2 + 3 + 1 + 0 + 3 + 1 + 0 + 5).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23103103) 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, 770089 + ... + 770118.

It is an arithmetic number, because the mean of its divisors is an integer number (4620624).

Almost surely, 223103105 is an apocalyptic number.

It is an amenable number.

23103105 is a deficient number, since it is larger than the sum of its proper divisors (13861887).

23103105 is a wasteful number, since it uses less digits than its factorization.

23103105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540215.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 23103105 is about 4806.5689426034. The cubic root of 23103105 is about 284.8110166027.

Adding to 23103105 its reverse (50130132), we get a palindrome (73233237).

The spelling of 23103105 in words is "twenty-three million, one hundred three thousand, one hundred five".

Divisors: 1 3 5 15 1540207 4620621 7701035 23103105