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253885131 = 3383193587
BaseRepresentation
bin11110010000111…
…11101011001011
3122200201200221000
433020133223023
51004443311011
641105350043
76201662613
oct1710375313
9580650830
10253885131
11120347725
1271038323
13407a2bb6
1425a0ba43
1517450356
hexf21facb

253885131 has 32 divisors (see below), whose sum is σ = 383281920. Its totient is φ = 166067712.

The previous prime is 253885097. The next prime is 253885139. The reversal of 253885131 is 131588352.

It is not a de Polignac number, because 253885131 - 27 = 253885003 is a prime.

It is a super-2 number, since 2×2538851312 = 128915319485774322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253885139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432220 + ... + 432806.

It is an arithmetic number, because the mean of its divisors is an integer number (11977560).

Almost surely, 2253885131 is an apocalyptic number.

253885131 is a deficient number, since it is larger than the sum of its proper divisors (129396789).

253885131 is a wasteful number, since it uses less digits than its factorization.

253885131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 253885131 is about 15933.7732819317. The cubic root of 253885131 is about 633.2070704590.

It can be divided in two parts, 253885 and 131, that added together give a square (254016 = 5042).

The spelling of 253885131 in words is "two hundred fifty-three million, eight hundred eighty-five thousand, one hundred thirty-one".

Divisors: 1 3 9 27 83 193 249 579 587 747 1737 1761 2241 5211 5283 15849 16019 48057 48721 113291 144171 146163 339873 432513 438489 1019619 1315467 3058857 9403153 28209459 84628377 253885131