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BaseRepresentation
bin101100000101…
…0100111100001
31121111012220222
41120022213201
521404042121
62143212425
7400310252
oct130124741
947435828
1023112161
1112056566
1278a7115
134a32b47
1430d8b29
1520680ab
hex160a9e1

23112161 has 8 divisors (see below), whose sum is σ = 24040320. Its totient is φ = 22200048.

The previous prime is 23112157. The next prime is 23112179. The reversal of 23112161 is 16121132.

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 23112161 - 22 = 23112157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23112121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (3005040).

Almost surely, 223112161 is an apocalyptic number.

It is an amenable number.

23112161 is a deficient number, since it is larger than the sum of its proper divisors (928159).

23112161 is an equidigital number, since it uses as much as digits as its factorization.

23112161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8023.

The product of its digits is 72, while the sum is 17.

The square root of 23112161 is about 4807.5108944234. The cubic root of 23112161 is about 284.8482253333.

Adding to 23112161 its reverse (16121132), we get a palindrome (39233293).

The spelling of 23112161 in words is "twenty-three million, one hundred twelve thousand, one hundred sixty-one".

Divisors: 1 37 79 2923 7907 292559 624653 23112161