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253130969 = 71317163627
BaseRepresentation
bin11110001011001…
…11100011011001
3122122022101102002
433011213203121
51004300142334
641041250345
76162402110
oct1705474331
9578271362
10253130969
1111a982053
12709339b5
134059a850
1425892c77
1517351b7e
hexf1678d9

253130969 has 16 divisors (see below), whose sum is σ = 329874048. Its totient is φ = 188497152.

The previous prime is 253130957. The next prime is 253130971. The reversal of 253130969 is 969031352.

It is a cyclic number.

It is not a de Polignac number, because 253130969 - 220 = 252082393 is a prime.

It is a super-3 number, since 3×2531309693 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253130989) 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, 80267 + ... + 83360.

It is an arithmetic number, because the mean of its divisors is an integer number (20617128).

Almost surely, 2253130969 is an apocalyptic number.

It is an amenable number.

253130969 is a deficient number, since it is larger than the sum of its proper divisors (76743079).

253130969 is a wasteful number, since it uses less digits than its factorization.

253130969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163664.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 253130969 is about 15910.0901631638. The cubic root of 253130969 is about 632.5794712331.

The spelling of 253130969 in words is "two hundred fifty-three million, one hundred thirty thousand, nine hundred sixty-nine".

Divisors: 1 7 13 17 91 119 221 1547 163627 1145389 2127151 2781659 14890057 19471613 36161567 253130969