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23123097 = 33856411
BaseRepresentation
bin101100000110…
…1010010011001
31121111202221000
41120031102121
521404414342
62143335213
7400354164
oct130152231
947452830
1023123097
11120637a8
1278b1509
134a37b0a
1430dcadb
15206b44c
hex160d499

23123097 has 8 divisors (see below), whose sum is σ = 34256480. Its totient is φ = 15415380.

The previous prime is 23123071. The next prime is 23123143. The reversal of 23123097 is 79032132.

It is not a de Polignac number, because 23123097 - 215 = 23090329 is a prime.

It is a super-2 number, since 2×231230972 = 1069355229742818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 856411 = 23123097 / (2 + 3 + 1 + 2 + 3 + 0 + 9 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23123097.

It is not an unprimeable number, because it can be changed into a prime (23123047) 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, 428179 + ... + 428232.

It is an arithmetic number, because the mean of its divisors is an integer number (4282060).

Almost surely, 223123097 is an apocalyptic number.

23123097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23123097 is a deficient number, since it is larger than the sum of its proper divisors (11133383).

23123097 is an equidigital number, since it uses as much as digits as its factorization.

23123097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856420 (or 856414 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 23123097 is about 4808.6481468288. The cubic root of 23123097 is about 284.8931455379.

The spelling of 23123097 in words is "twenty-three million, one hundred twenty-three thousand, ninety-seven".

Divisors: 1 3 9 27 856411 2569233 7707699 23123097