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230512131 = 3233017759
BaseRepresentation
bin11011011110101…
…01011000000011
3121001202020012100
431233111120003
5433002342011
634512401443
75466215013
oct1557253003
9531666170
10230512131
111091331a3
1265246283
13389ab415
1422885c43
1515384d56
hexdbd5603

230512131 has 12 divisors (see below), whose sum is σ = 333105760. Its totient is φ = 153608400.

The previous prime is 230512103. The next prime is 230512147. The reversal of 230512131 is 131215032.

230512131 is a `hidden beast` number, since 23 + 0 + 512 + 131 = 666.

It is not a de Polignac number, because 230512131 - 25 = 230512099 is a prime.

It is a super-2 number, since 2×2305121312 = 106271685076322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230512151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25830 + ... + 33588.

Almost surely, 2230512131 is an apocalyptic number.

230512131 is a deficient number, since it is larger than the sum of its proper divisors (102593629).

230512131 is a wasteful number, since it uses less digits than its factorization.

230512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11066 (or 11063 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 230512131 is about 15182.6259586410. The cubic root of 230512131 is about 613.1469823814.

Adding to 230512131 its reverse (131215032), we get a palindrome (361727163).

The spelling of 230512131 in words is "two hundred thirty million, five hundred twelve thousand, one hundred thirty-one".

Divisors: 1 3 9 3301 7759 9903 23277 29709 69831 25612459 76837377 230512131