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83143201 = 711171031
BaseRepresentation
bin1001111010010…
…10101000100001
312210110010000211
410331022220201
5132241040301
612130014121
72026464001
oct475125041
9183403024
1083143201
1142a28799
1223a17341
13142c0c7b
14b084001
157475051
hex4f4aa21

83143201 has 4 divisors (see below), whose sum is σ = 84314304. Its totient is φ = 81972100.

The previous prime is 83143199. The next prime is 83143223. The reversal of 83143201 is 10234138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10234138 = 25117069.

It is a cyclic number.

It is not a de Polignac number, because 83143201 - 21 = 83143199 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83143241) 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, 585445 + ... + 585586.

It is an arithmetic number, because the mean of its divisors is an integer number (21078576).

Almost surely, 283143201 is an apocalyptic number.

It is an amenable number.

83143201 is a deficient number, since it is larger than the sum of its proper divisors (1171103).

83143201 is a wasteful number, since it uses less digits than its factorization.

83143201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171102.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 83143201 is about 9118.2893680778. The cubic root of 83143201 is about 436.4577876216.

Adding to 83143201 its reverse (10234138), we get a palindrome (93377339).

The spelling of 83143201 in words is "eighty-three million, one hundred forty-three thousand, two hundred one".

Divisors: 1 71 1171031 83143201