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230508811 = 13591492017
BaseRepresentation
bin11011011110101…
…00100100001011
3121001202001122101
431233110210023
5433002240221
634512334231
75466202231
oct1557244413
9531661571
10230508811
11109130755
1265244377
13389a9a60
1422884951
1515383d91
hexdbd490b

230508811 has 16 divisors (see below), whose sum is σ = 254268000. Its totient is φ = 207664128.

The previous prime is 230508809. The next prime is 230508823. The reversal of 230508811 is 118805032.

It is a cyclic number.

It is not a de Polignac number, because 230508811 - 21 = 230508809 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 230508811.

It is not an unprimeable number, because it can be changed into a prime (230508841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113275 + ... + 115291.

It is an arithmetic number, because the mean of its divisors is an integer number (15891750).

Almost surely, 2230508811 is an apocalyptic number.

230508811 is a deficient number, since it is larger than the sum of its proper divisors (23759189).

230508811 is a wasteful number, since it uses less digits than its factorization.

230508811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 230508811 is about 15182.5166227474. The cubic root of 230508811 is about 613.1440387073.

The spelling of 230508811 in words is "two hundred thirty million, five hundred eight thousand, eight hundred eleven".

Divisors: 1 13 59 149 767 1937 2017 8791 26221 114283 119003 300533 1547039 3906929 17731447 230508811