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230355469 = 809284741
BaseRepresentation
bin11011011101011…
…11001000001101
3121001110021022001
431232233020031
5432432333334
634505152301
75464663201
oct1556571015
9531407261
10230355469
11109036523
126518b691
1338955016
1422844b01
1515353714
hexdbaf20d

230355469 has 4 divisors (see below), whose sum is σ = 230641020. Its totient is φ = 230069920.

The previous prime is 230355467. The next prime is 230355473. The reversal of 230355469 is 964553032.

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 209149444 + 21206025 = 14462^2 + 4605^2 .

It is a cyclic number.

It is not a de Polignac number, because 230355469 - 21 = 230355467 is a prime.

It is a super-2 number, since 2×2303554692 = 106127284196419922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230355467) 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, 141562 + ... + 143179.

It is an arithmetic number, because the mean of its divisors is an integer number (57660255).

Almost surely, 2230355469 is an apocalyptic number.

It is an amenable number.

230355469 is a deficient number, since it is larger than the sum of its proper divisors (285551).

230355469 is an equidigital number, since it uses as much as digits as its factorization.

230355469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285550.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 230355469 is about 15177.4658293142. The cubic root of 230355469 is about 613.0080473916.

The spelling of 230355469 in words is "two hundred thirty million, three hundred fifty-five thousand, four hundred sixty-nine".

Divisors: 1 809 284741 230355469