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230524661 = 269856969
BaseRepresentation
bin11011011110110…
…00011011110101
3121001202212101102
431233120123311
5433003242121
634512535445
75466266363
oct1557303365
9531685342
10230524661
11109141654
1265251585
13389b4033
142288a633
151538890b
hexdbd86f5

230524661 has 4 divisors (see below), whose sum is σ = 231381900. Its totient is φ = 229667424.

The previous prime is 230524643. The next prime is 230524667. The reversal of 230524661 is 166425032.

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 11662225 + 218862436 = 3415^2 + 14794^2 .

It is a cyclic number.

It is not a de Polignac number, because 230524661 - 26 = 230524597 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 (230524667) 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, 428216 + ... + 428753.

It is an arithmetic number, because the mean of its divisors is an integer number (57845475).

Almost surely, 2230524661 is an apocalyptic number.

It is an amenable number.

230524661 is a deficient number, since it is larger than the sum of its proper divisors (857239).

230524661 is an equidigital number, since it uses as much as digits as its factorization.

230524661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857238.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 230524661 is about 15183.0385957489. The cubic root of 230524661 is about 613.1580918364.

Adding to 230524661 its reverse (166425032), we get a palindrome (396949693).

The spelling of 230524661 in words is "two hundred thirty million, five hundred twenty-four thousand, six hundred sixty-one".

Divisors: 1 269 856969 230524661