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23123169 = 323796779
BaseRepresentation
bin101100000110…
…1010011100001
31121111210000200
41120031103201
521404420134
62143335413
7400354326
oct130152341
947453020
1023123169
1112063863
1278b1569
134a37b64
1430dcb4d
15206b499
hex160d4e1

23123169 has 12 divisors (see below), whose sum is σ = 33493200. Its totient is φ = 15372504.

The previous prime is 23123167. The next prime is 23123173. The reversal of 23123169 is 96132132.

It is not a de Polignac number, because 23123169 - 21 = 23123167 is a prime.

It is a super-2 number, since 2×231231692 = 1069361889205122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23123167) 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 11 ways as a sum of consecutive naturals, for example, 22 + ... + 6800.

It is an arithmetic number, because the mean of its divisors is an integer number (2791100).

Almost surely, 223123169 is an apocalyptic number.

It is an amenable number.

23123169 is a deficient number, since it is larger than the sum of its proper divisors (10370031).

23123169 is a wasteful number, since it uses less digits than its factorization.

23123169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164 (or 7161 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 23123169 is about 4808.6556333345. The cubic root of 23123169 is about 284.8934412348.

It can be divided in two parts, 2312316 and 9, that added together give a triangular number (2312325 = T2150).

The spelling of 23123169 in words is "twenty-three million, one hundred twenty-three thousand, one hundred sixty-nine".

Divisors: 1 3 9 379 1137 3411 6779 20337 61011 2569241 7707723 23123169