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23286231 = 338310391
BaseRepresentation
bin101100011010…
…1000111010111
31121211001201000
41120311013113
521430124411
62151034343
7401633613
oct130650727
947731630
1023286231
1112165321
12796b9b3
134a94147
143142343
15209e956
hex16351d7

23286231 has 16 divisors (see below), whose sum is σ = 34917120. Its totient is φ = 15335640.

The previous prime is 23286203. The next prime is 23286247. The reversal of 23286231 is 13268232.

23286231 is a `hidden beast` number, since 2 + 32 + 8 + 623 + 1 = 666.

It is not a de Polignac number, because 23286231 - 25 = 23286199 is a prime.

It is a super-2 number, since 2×232862312 = 1084497108370722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 23286195 and 23286204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23286271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2955 + ... + 7436.

It is an arithmetic number, because the mean of its divisors is an integer number (2182320).

Almost surely, 223286231 is an apocalyptic number.

23286231 is a deficient number, since it is larger than the sum of its proper divisors (11630889).

23286231 is a wasteful number, since it uses less digits than its factorization.

23286231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10483 (or 10477 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 23286231 is about 4825.5808976744. The cubic root of 23286231 is about 285.5615520943.

The spelling of 23286231 in words is "twenty-three million, two hundred eighty-six thousand, two hundred thirty-one".

Divisors: 1 3 9 27 83 249 747 2241 10391 31173 93519 280557 862453 2587359 7762077 23286231