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230515143 = 3372076713
BaseRepresentation
bin11011011110101…
…10000111000111
3121001202101022220
431233112013013
5433002441033
634512423423
75466226545
oct1557260707
9531671286
10230515143
11109135491
1265247b73
13389ac8c1
1422886d95
1515385bb3
hexdbd61c7

230515143 has 8 divisors (see below), whose sum is σ = 315660528. Its totient is φ = 149523264.

The previous prime is 230515091. The next prime is 230515151. The reversal of 230515143 is 341515032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 230515143 - 213 = 230506951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230515643) 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 7 ways as a sum of consecutive naturals, for example, 1038246 + ... + 1038467.

It is an arithmetic number, because the mean of its divisors is an integer number (39457566).

Almost surely, 2230515143 is an apocalyptic number.

230515143 is a deficient number, since it is larger than the sum of its proper divisors (85145385).

230515143 is a wasteful number, since it uses less digits than its factorization.

230515143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076753.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 230515143 is about 15182.7251506441. The cubic root of 230515143 is about 613.1496529432.

The spelling of 230515143 in words is "two hundred thirty million, five hundred fifteen thousand, one hundred forty-three".

Divisors: 1 3 37 111 2076713 6230139 76838381 230515143