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103311133 = 731415221
BaseRepresentation
bin1100010100001…
…10011100011101
321012101202020021
412022012130131
5202421424013
614130152141
72363062432
oct612063435
9235352207
10103311133
1153353202
122a722651
1318532963
14da13b89
15910aa8d
hex628671d

103311133 has 4 divisors (see below), whose sum is σ = 104726428. Its totient is φ = 101895840.

The previous prime is 103311083. The next prime is 103311139. The reversal of 103311133 is 331113301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331113301 = 1719477253.

It can be written as a sum of positive squares in 2 ways, for example, as 78180964 + 25130169 = 8842^2 + 5013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-103311133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103311139) 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, 707538 + ... + 707683.

It is an arithmetic number, because the mean of its divisors is an integer number (26181607).

Almost surely, 2103311133 is an apocalyptic number.

It is an amenable number.

103311133 is a deficient number, since it is larger than the sum of its proper divisors (1415295).

103311133 is an equidigital number, since it uses as much as digits as its factorization.

103311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415294.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 103311133 is about 10164.2084295827. The cubic root of 103311133 is about 469.2263309009.

Adding to 103311133 its reverse (331113301), we get a palindrome (434424434).

The spelling of 103311133 in words is "one hundred three million, three hundred eleven thousand, one hundred thirty-three".

Divisors: 1 73 1415221 103311133