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200013231 = 31137163811
BaseRepresentation
bin10111110101111…
…11010110101111
3111221100201120110
423322333112233
5402200410411
631502551103
74646040645
oct1372772657
9457321513
10200013231
11a29a19a0
1256b98493
1332590332
141c7c7195
151285d2a6
hexbebf5af

200013231 has 16 divisors (see below), whose sum is σ = 298793088. Its totient is φ = 117943200.

The previous prime is 200013223. The next prime is 200013257. The reversal of 200013231 is 132310002.

It is a happy number.

It is not a de Polignac number, because 200013231 - 23 = 200013223 is a prime.

It is a super-2 number, since 2×2000132312 = 80010585150118722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200013031) 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, 80685 + ... + 83126.

It is an arithmetic number, because the mean of its divisors is an integer number (18674568).

Almost surely, 2200013231 is an apocalyptic number.

200013231 is a deficient number, since it is larger than the sum of its proper divisors (98779857).

200013231 is a wasteful number, since it uses less digits than its factorization.

200013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163862.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 200013231 is about 14142.6034024857. The cubic root of 200013231 is about 584.8164432511.

Adding to 200013231 its reverse (132310002), we get a palindrome (332323233).

It can be divided in two parts, 20001 and 3231, that added together give a palindrome (23232).

The spelling of 200013231 in words is "two hundred million, thirteen thousand, two hundred thirty-one".

Divisors: 1 3 11 33 37 111 407 1221 163811 491433 1801921 5405763 6061007 18183021 66671077 200013231