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BaseRepresentation
bin1011111011101…
…10101110010001
320222100122202210
411331312232101
5201111213014
613533302333
72323562451
oct575665621
9228318683
10100101009
1151560408
12296349a9
131797a788
14d419d61
158bc4859
hex5f76b91

100101009 has 4 divisors (see below), whose sum is σ = 133468016. Its totient is φ = 66734004.

The previous prime is 100101007. The next prime is 100101013. The reversal of 100101009 is 900101001.

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.

It is not a de Polignac number, because 100101009 - 21 = 100101007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100100985 and 100101003.

It is not an unprimeable number, because it can be changed into a prime (100101007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16683499 + ... + 16683504.

It is an arithmetic number, because the mean of its divisors is an integer number (33367004).

Almost surely, 2100101009 is an apocalyptic number.

It is an amenable number.

100101009 is a deficient number, since it is larger than the sum of its proper divisors (33367007).

100101009 is an equidigital number, since it uses as much as digits as its factorization.

100101009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33367006.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 100101009 is about 10005.0491752914. The cubic root of 100101009 is about 464.3151115204.

The spelling of 100101009 in words is "one hundred million, one hundred one thousand, nine".

Divisors: 1 3 33367003 100101009