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230231317 = 439752361
BaseRepresentation
bin11011011100100…
…00110100010101
3121001012221222211
431232100310111
5432414400232
634502353421
75463635221
oct1556206425
9531187884
10230231317
11108a61218
126512b871
1338910664
1422811781
151532ba47
hexdb90d15

230231317 has 4 divisors (see below), whose sum is σ = 230288076. Its totient is φ = 230174560.

The previous prime is 230231299. The next prime is 230231347. The reversal of 230231317 is 713132032.

It is a happy number.

230231317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54774801 + 175456516 = 7401^2 + 13246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230231317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230231347) 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, 21784 + ... + 30577.

It is an arithmetic number, because the mean of its divisors is an integer number (57572019).

Almost surely, 2230231317 is an apocalyptic number.

It is an amenable number.

230231317 is a deficient number, since it is larger than the sum of its proper divisors (56759).

230231317 is an equidigital number, since it uses as much as digits as its factorization.

230231317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56758.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 230231317 is about 15173.3752672238. The cubic root of 230231317 is about 612.8978990020.

Adding to 230231317 its reverse (713132032), we get a palindrome (943363349).

The spelling of 230231317 in words is "two hundred thirty million, two hundred thirty-one thousand, three hundred seventeen".

Divisors: 1 4397 52361 230231317