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231024043 = 728331721
BaseRepresentation
bin11011100010100…
…10010110101011
3121002201020102001
431301102112223
5433120232133
634531351431
75503446325
oct1561222653
9532636361
10231024043
11109452868
1265452577
1338b2a423
142297a615
151543687d
hexdc525ab

231024043 has 4 divisors (see below), whose sum is σ = 231063048. Its totient is φ = 230985040.

The previous prime is 231024037. The next prime is 231024071. The reversal of 231024043 is 340420132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231024043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231024043.

It is not an unprimeable number, because it can be changed into a prime (231028043) 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, 8578 + ... + 23143.

It is an arithmetic number, because the mean of its divisors is an integer number (57765762).

Almost surely, 2231024043 is an apocalyptic number.

231024043 is a deficient number, since it is larger than the sum of its proper divisors (39005).

231024043 is an equidigital number, since it uses as much as digits as its factorization.

231024043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39004.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 231024043 is about 15199.4750896207. The cubic root of 231024043 is about 613.6005307973.

Adding to 231024043 its reverse (340420132), we get a palindrome (571444175).

The spelling of 231024043 in words is "two hundred thirty-one million, twenty-four thousand, forty-three".

Divisors: 1 7283 31721 231024043