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3143297 = 15720021
BaseRepresentation
bin1011111111011010000001
312220200210102
423333122001
51301041142
6151212145
735501063
oct13773201
95820712
103143297
111857673
121077055
13860951
145bb733
15421532
hex2ff681

3143297 has 4 divisors (see below), whose sum is σ = 3163476. Its totient is φ = 3123120.

The previous prime is 3143263. The next prime is 3143299. The reversal of 3143297 is 7923413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7923413 = 22335531.

It can be written as a sum of positive squares in 2 ways, for example, as 456976 + 2686321 = 676^2 + 1639^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143297 - 210 = 3142273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3143299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9854 + ... + 10167.

It is an arithmetic number, because the mean of its divisors is an integer number (790869).

Almost surely, 23143297 is an apocalyptic number.

It is an amenable number.

3143297 is a deficient number, since it is larger than the sum of its proper divisors (20179).

3143297 is a wasteful number, since it uses less digits than its factorization.

3143297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20178.

The product of its digits is 4536, while the sum is 29.

The square root of 3143297 is about 1772.9345729609. The cubic root of 3143297 is about 146.4856691748.

The spelling of 3143297 in words is "three million, one hundred forty-three thousand, two hundred ninety-seven".

Divisors: 1 157 20021 3143297