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109110913 = 176418289
BaseRepresentation
bin1101000000011…
…10011010000001
321121022102000221
412200032122001
5210413022123
614454343041
72463266422
oct640163201
9247272027
10109110913
115665470a
123065aa81
13197b3792
14106c3649
1598a425d
hex680e681

109110913 has 4 divisors (see below), whose sum is σ = 115529220. Its totient is φ = 102692608.

The previous prime is 109110899. The next prime is 109110959. The reversal of 109110913 is 319011901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319011901 = 1324539377.

It can be written as a sum of positive squares in 2 ways, for example, as 75203584 + 33907329 = 8672^2 + 5823^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-109110913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109110013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3209128 + ... + 3209161.

It is an arithmetic number, because the mean of its divisors is an integer number (28882305).

Almost surely, 2109110913 is an apocalyptic number.

It is an amenable number.

109110913 is a deficient number, since it is larger than the sum of its proper divisors (6418307).

109110913 is an equidigital number, since it uses as much as digits as its factorization.

109110913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418306.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 109110913 is about 10445.6169276879. The cubic root of 109110913 is about 477.8475862523.

The spelling of 109110913 in words is "one hundred nine million, one hundred ten thousand, nine hundred thirteen".

Divisors: 1 17 6418289 109110913