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230636631 = 3101761177
BaseRepresentation
bin11011011111100…
…11110001010111
3121001222112222110
431233303301113
5433020333011
634515202103
75500244001
oct1557636127
9531875873
10230636631
11109208795
12652a6333
1338a22ca4
14228b9371
15153abba6
hexdbf3c57

230636631 has 8 divisors (see below), whose sum is σ = 310560624. Its totient is φ = 152235200.

The previous prime is 230636597. The next prime is 230636639. The reversal of 230636631 is 136636032.

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

It is a cyclic number.

It is not a de Polignac number, because 230636631 - 211 = 230634583 is a prime.

It is a super-2 number, since 2×2306366312 = 106386511118060322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230636639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380286 + ... + 380891.

It is an arithmetic number, because the mean of its divisors is an integer number (38820078).

Almost surely, 2230636631 is an apocalyptic number.

230636631 is a deficient number, since it is larger than the sum of its proper divisors (79923993).

230636631 is a wasteful number, since it uses less digits than its factorization.

230636631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761281.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 230636631 is about 15186.7254864240. The cubic root of 230636631 is about 613.2573497619.

The spelling of 230636631 in words is "two hundred thirty million, six hundred thirty-six thousand, six hundred thirty-one".

Divisors: 1 3 101 303 761177 2283531 76878877 230636631