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3102009 = 31034003
BaseRepresentation
bin1011110101010100111001
312211121011020
423311110321
51243231014
6150253053
735236521
oct13652471
95747136
103102009
111829649
121057189
13847c11
145aa681
154141a9
hex2f5539

3102009 has 4 divisors (see below), whose sum is σ = 4136016. Its totient is φ = 2068004.

The previous prime is 3101999. The next prime is 3102017. The reversal of 3102009 is 9002013.

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: 9002013 = 33000671.

It is a cyclic number.

It is not a de Polignac number, because 3102009 - 27 = 3101881 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3102059) 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, 516999 + ... + 517004.

It is an arithmetic number, because the mean of its divisors is an integer number (1034004).

Almost surely, 23102009 is an apocalyptic number.

It is an amenable number.

3102009 is a deficient number, since it is larger than the sum of its proper divisors (1034007).

3102009 is a wasteful number, since it uses less digits than its factorization.

3102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034006.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 3102009 is about 1761.2521114253. The cubic root of 3102009 is about 145.8414648708.

The spelling of 3102009 in words is "three million, one hundred two thousand, nine".

Divisors: 1 3 1034003 3102009