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231046664 = 23137210809
BaseRepresentation
bin11011100010101…
…11111000001000
3121002202101102212
431301113320020
5433121443124
634532044252
75503602302
oct1561277010
9532671385
10231046664
11109468862
1265463688
1338b37804
1422984972
151543d40e
hexdc57e08

231046664 has 16 divisors (see below), whose sum is σ = 436376700. Its totient is φ = 114679552.

The previous prime is 231046649. The next prime is 231046667. The reversal of 231046664 is 466640132.

231046664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 230128900 + 917764 = 15170^2 + 958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231046664.

It is not an unprimeable number, because it can be changed into a prime (231046667) 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, 104309 + ... + 106500.

Almost surely, 2231046664 is an apocalyptic number.

It is an amenable number.

231046664 is a deficient number, since it is larger than the sum of its proper divisors (205330036).

231046664 is a wasteful number, since it uses less digits than its factorization.

231046664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210952 (or 210948 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 231046664 is about 15200.2192089456. The cubic root of 231046664 is about 613.6205572910.

Adding to 231046664 its reverse (466640132), we get a palindrome (697686796).

The spelling of 231046664 in words is "two hundred thirty-one million, forty-six thousand, six hundred sixty-four".

Divisors: 1 2 4 8 137 274 548 1096 210809 421618 843236 1686472 28880833 57761666 115523332 231046664