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103311019 = 764722811
BaseRepresentation
bin1100010100001…
…10011010101011
321012101202002001
412022012122223
5202421423034
614130151431
72363062210
oct612063253
9235352061
10103311019
1153353109
122a722577
13185328a6
14da13b07
15910aa14
hex62866ab

103311019 has 8 divisors (see below), whose sum is σ = 118257408. Its totient is φ = 88411560.

The previous prime is 103311017. The next prime is 103311053. The reversal of 103311019 is 910113301.

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 103311019 - 21 = 103311017 is a prime.

It is a super-2 number, since 2×1033110192 = 21346333293636722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103310987 and 103311005.

It is not an unprimeable number, because it can be changed into a prime (103311017) 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 7 ways as a sum of consecutive naturals, for example, 6877 + ... + 15934.

It is an arithmetic number, because the mean of its divisors is an integer number (14782176).

Almost surely, 2103311019 is an apocalyptic number.

103311019 is a deficient number, since it is larger than the sum of its proper divisors (14946389).

103311019 is an equidigital number, since it uses as much as digits as its factorization.

103311019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23465.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 103311019 is about 10164.2028216678. The cubic root of 103311019 is about 469.2261583096.

The spelling of 103311019 in words is "one hundred three million, three hundred eleven thousand, nineteen".

Divisors: 1 7 647 4529 22811 159677 14758717 103311019