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200320231 = 1753223997
BaseRepresentation
bin10111111000010…
…10010011100111
3111221221022200211
423330022103213
5402240221411
631513320251
74651456666
oct1374122347
9457838624
10200320231
11a3091611
1257106087
1332669ca7
141c866ddd
15128be221
hexbf0a4e7

200320231 has 16 divisors (see below), whose sum is σ = 217292544. Its totient is φ = 183965184.

The previous prime is 200320223. The next prime is 200320247. The reversal of 200320231 is 132023002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200320231 - 23 = 200320223 is a prime.

It is a super-2 number, since 2×2003202312 = 80256389895786722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200320201) 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, 200425 + ... + 201421.

It is an arithmetic number, because the mean of its divisors is an integer number (13580784).

Almost surely, 2200320231 is an apocalyptic number.

200320231 is a deficient number, since it is larger than the sum of its proper divisors (16972313).

200320231 is a wasteful number, since it uses less digits than its factorization.

200320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 200320231 is about 14153.4529709184. The cubic root of 200320231 is about 585.1155015810.

Adding to 200320231 its reverse (132023002), we get a palindrome (332343233).

The spelling of 200320231 in words is "two hundred million, three hundred twenty thousand, two hundred thirty-one".

Divisors: 1 17 53 223 901 997 3791 11819 16949 52841 200923 222331 898297 3779627 11783543 200320231