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230305937 = 1375716741
BaseRepresentation
bin11011011101000…
…11000010010001
3121001100202100112
431232203002101
5432424242222
634504131105
75464365611
oct1556430221
9531322315
10230305937
11109002294
1265166a95
1338938604
1422830a41
1515343be2
hexdba3091

230305937 has 4 divisors (see below), whose sum is σ = 230336436. Its totient is φ = 230275440.

The previous prime is 230305931. The next prime is 230305961. The reversal of 230305937 is 739503032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 120978001 + 109327936 = 10999^2 + 10456^2 .

It is a cyclic number.

It is not a de Polignac number, because 230305937 - 220 = 229257361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230305931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5387 + ... + 22127.

It is an arithmetic number, because the mean of its divisors is an integer number (57584109).

Almost surely, 2230305937 is an apocalyptic number.

It is an amenable number.

230305937 is a deficient number, since it is larger than the sum of its proper divisors (30499).

230305937 is a wasteful number, since it uses less digits than its factorization.

230305937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30498.

The product of its (nonzero) digits is 17010, while the sum is 32.

The square root of 230305937 is about 15175.8339803781. The cubic root of 230305937 is about 612.9641070541.

Adding to 230305937 its reverse (739503032), we get a palindrome (969808969).

The spelling of 230305937 in words is "two hundred thirty million, three hundred five thousand, nine hundred thirty-seven".

Divisors: 1 13757 16741 230305937