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201303231 = 3169739541
BaseRepresentation
bin10111111111110…
…10010010111111
3112000210021010020
423333322102333
5403013200411
631550343223
74663022613
oct1377722277
9460707106
10201303231
11a36a3108
12574bab13
133292254c
141ca41343
1512a15606
hexbffa4bf

201303231 has 8 divisors (see below), whose sum is σ = 268569264. Its totient is φ = 134119680.

The previous prime is 201303229. The next prime is 201303269. The reversal of 201303231 is 132303102.

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

It is not a de Polignac number, because 201303231 - 21 = 201303229 is a prime.

It is a super-2 number, since 2×2013032312 = 81045981622078722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201303231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201303281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14680 + ... + 24861.

It is an arithmetic number, because the mean of its divisors is an integer number (33571158).

Almost surely, 2201303231 is an apocalyptic number.

201303231 is a deficient number, since it is larger than the sum of its proper divisors (67266033).

201303231 is a wasteful number, since it uses less digits than its factorization.

201303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41241.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 201303231 is about 14188.1369812953. The cubic root of 201303231 is about 586.0710221164.

Adding to 201303231 its reverse (132303102), we get a palindrome (333606333).

The spelling of 201303231 in words is "two hundred one million, three hundred three thousand, two hundred thirty-one".

Divisors: 1 3 1697 5091 39541 118623 67101077 201303231