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230332661 = 13127139511
BaseRepresentation
bin11011011101010…
…01100011110101
3121001102010000022
431232221203311
5432431121121
634504454525
75464536536
oct1556514365
9531363008
10230332661
11109020379
126517a445
1338947820
142283a68d
151534baab
hexdba98f5

230332661 has 8 divisors (see below), whose sum is σ = 250005504. Its totient is φ = 210939120.

The previous prime is 230332633. The next prime is 230332679. The reversal of 230332661 is 166233032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230332661 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 230332661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230332601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68105 + ... + 71406.

It is an arithmetic number, because the mean of its divisors is an integer number (31250688).

Almost surely, 2230332661 is an apocalyptic number.

It is an amenable number.

230332661 is a deficient number, since it is larger than the sum of its proper divisors (19672843).

230332661 is a wasteful number, since it uses less digits than its factorization.

230332661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139651.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 230332661 is about 15176.7144336315. The cubic root of 230332661 is about 612.9878149670.

Adding to 230332661 its reverse (166233032), we get a palindrome (396565693).

The spelling of 230332661 in words is "two hundred thirty million, three hundred thirty-two thousand, six hundred sixty-one".

Divisors: 1 13 127 1651 139511 1813643 17717897 230332661