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83303231 = 1131244291
BaseRepresentation
bin1001111011100…
…01101100111111
312210202020112212
410331301230333
5132311200411
612133251035
72031031364
oct475615477
9183666485
1083303231
1143027a50
1223a93a7b
1314348a6b
14b0c646b
1574a768b
hex4f71b3f

83303231 has 8 divisors (see below), whose sum is σ = 93808128. Its totient is φ = 73287000.

The previous prime is 83303203. The next prime is 83303257. The reversal of 83303231 is 13230338.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-83303231 is a prime.

It is a super-2 number, since 2×833032312 = 13878856590078722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83303197 and 83303206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83303131) 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, 121805 + ... + 122486.

It is an arithmetic number, because the mean of its divisors is an integer number (11726016).

Almost surely, 283303231 is an apocalyptic number.

83303231 is a deficient number, since it is larger than the sum of its proper divisors (10504897).

83303231 is a wasteful number, since it uses less digits than its factorization.

83303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244333.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 83303231 is about 9127.0603701301. The cubic root of 83303231 is about 436.7376324134.

Adding to 83303231 its reverse (13230338), we get a palindrome (96533569).

The spelling of 83303231 in words is "eighty-three million, three hundred three thousand, two hundred thirty-one".

Divisors: 1 11 31 341 244291 2687201 7573021 83303231