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103083409 = 112132712
BaseRepresentation
bin1100010010011…
…10110110010001
321011222011212001
412021032312101
5202342132114
614121234001
72361123502
oct611166621
9234864761
10103083409
1153208100
122a632901
1318483100
14d994ba9
1590b3374
hex624ed91

103083409 has 27 divisors (see below), whose sum is σ = 124445307. Its totient is φ = 85285200.

The previous prime is 103083403. The next prime is 103083419. The reversal of 103083409 is 904380301.

103083409 = 13 + 23 + ... + 1423.

The square root of 103083409 is 10153.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 87834384 = 3905^2 + 9372^2 .

It is not a de Polignac number, because 103083409 - 215 = 103050641 is a prime.

It is a super-2 number, since 2×1030834092 = 21252378422122562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103083403) 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 26 ways as a sum of consecutive naturals, for example, 1451844 + ... + 1451914.

Almost surely, 2103083409 is an apocalyptic number.

103083409 is the 10153-rd square number.

103083409 is the 5077-th centered octagonal number.

It is an amenable number.

103083409 is a deficient number, since it is larger than the sum of its proper divisors (21361898).

103083409 is an equidigital number, since it uses as much as digits as its factorization.

103083409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The cubic root of 103083409 is about 468.8813125686.

The spelling of 103083409 in words is "one hundred three million, eighty-three thousand, four hundred nine".

Divisors: 1 11 13 71 121 143 169 781 923 1573 1859 5041 8591 10153 11999 20449 55451 65533 111683 131989 609961 720863 851929 1451879 7929493 9371219 103083409