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231268401 = 32713319109
BaseRepresentation
bin11011100100011…
…10000000110001
3121010011122121100
431302032000301
5433201042101
634540515013
75505514620
oct1562160061
9533148540
10231268401
111095aa411
126554ba69
1338bb4710
1422a016b7
1515483e86
hexdc8e031

231268401 has 48 divisors (see below), whose sum is σ = 424453120. Its totient is φ = 118039680.

The previous prime is 231268393. The next prime is 231268403. The reversal of 231268401 is 104862132.

231268401 is a `hidden beast` number, since 231 + 26 + 8 + 401 = 666.

It is not a de Polignac number, because 231268401 - 23 = 231268393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231268403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20835 + ... + 29943.

Almost surely, 2231268401 is an apocalyptic number.

231268401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231268401 is a deficient number, since it is larger than the sum of its proper divisors (193184719).

231268401 is a wasteful number, since it uses less digits than its factorization.

231268401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9166 (or 9163 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 231268401 is about 15207.5113348634. The cubic root of 231268401 is about 613.8167930870.

The spelling of 231268401 in words is "two hundred thirty-one million, two hundred sixty-eight thousand, four hundred one".

Divisors: 1 3 7 9 13 21 31 39 63 91 93 117 217 273 279 403 651 819 1209 1953 2821 3627 8463 9109 25389 27327 63763 81981 118417 191289 282379 355251 573867 828919 847137 1065753 1976653 2486757 2541411 3670927 5929959 7460271 11012781 17789877 25696489 33038343 77089467 231268401