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230509043 = 1861123863
BaseRepresentation
bin11011011110101…
…00100111110011
3121001202001221222
431233110213303
5433002242133
634512335255
75466203012
oct1557244763
9531661858
10230509043
11109130946
126524452b
13389a9bab
1422884a79
1515383e98
hexdbd49f3

230509043 has 4 divisors (see below), whose sum is σ = 230634768. Its totient is φ = 230383320.

The previous prime is 230508989. The next prime is 230509049. The reversal of 230509043 is 340905032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230509043 - 26 = 230508979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230509049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60071 + ... + 63792.

It is an arithmetic number, because the mean of its divisors is an integer number (57658692).

Almost surely, 2230509043 is an apocalyptic number.

230509043 is a deficient number, since it is larger than the sum of its proper divisors (125725).

230509043 is a wasteful number, since it uses less digits than its factorization.

230509043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125724.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 230509043 is about 15182.5242631125. The cubic root of 230509043 is about 613.1442444107.

The spelling of 230509043 in words is "two hundred thirty million, five hundred nine thousand, forty-three".

Divisors: 1 1861 123863 230509043