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3145109 = 111372087
BaseRepresentation
bin1011111111110110010101
312220210021112
423333312111
51301120414
6151224405
735506262
oct13776625
95823245
103145109
111858a70
121078105
13861716
145bc269
15421d3e
hex2ffd95

3145109 has 8 divisors (see below), whose sum is σ = 3457728. Its totient is φ = 2836960.

The previous prime is 3145097. The next prime is 3145117. The reversal of 3145109 is 9015413.

It is a happy number.

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 3145109 - 28 = 3144853 is a prime.

It is a super-3 number, since 3×31451093 = 93331524306820590087, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145169) 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, 464 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (432216).

Almost surely, 23145109 is an apocalyptic number.

It is an amenable number.

3145109 is a deficient number, since it is larger than the sum of its proper divisors (312619).

3145109 is a wasteful number, since it uses less digits than its factorization.

3145109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 3145109 is about 1773.4455165017. The cubic root of 3145109 is about 146.5138117106.

The spelling of 3145109 in words is "three million, one hundred forty-five thousand, one hundred nine".

Divisors: 1 11 137 1507 2087 22957 285919 3145109