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3145143 = 33113371
BaseRepresentation
bin1011111111110110110111
312220210022210
423333312313
51301121033
6151224503
735506341
oct13776667
95823283
103145143
111858aa1
121078133
13861741
145bc291
15421d63
hex2ffdb7

3145143 has 8 divisors (see below), whose sum is σ = 4208256. Its totient is φ = 2089400.

The previous prime is 3145141. The next prime is 3145147. The reversal of 3145143 is 3415413.

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

It is a cyclic number.

It is not a de Polignac number, because 3145143 - 21 = 3145141 is a prime.

It is a super-3 number, since 3×31451433 = 93334551202992717621, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145141) 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, 753 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (526032).

Almost surely, 23145143 is an apocalyptic number.

3145143 is a deficient number, since it is larger than the sum of its proper divisors (1063113).

3145143 is a wasteful number, since it uses less digits than its factorization.

3145143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its digits is 720, while the sum is 21.

The square root of 3145143 is about 1773.4551023356. The cubic root of 3145143 is about 146.5143396681.

The spelling of 3145143 in words is "three million, one hundred forty-five thousand, one hundred forty-three".

Divisors: 1 3 311 933 3371 10113 1048381 3145143