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109903481 = 701156781
BaseRepresentation
bin1101000110011…
…11111001111001
321122210200020022
412203033321321
5211113402411
614523340225
72503110212
oct643177171
9248720208
10109903481
1157046126
1230981675
1319a0045c
141084c409
1599adedb
hex68cfe79

109903481 has 4 divisors (see below), whose sum is σ = 110060964. Its totient is φ = 109746000.

The previous prime is 109903477. The next prime is 109903483. The reversal of 109903481 is 184309901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79477225 + 30426256 = 8915^2 + 5516^2 .

It is a cyclic number.

It is not a de Polignac number, because 109903481 - 22 = 109903477 is a prime.

It is a super-2 number, since 2×1099034812 = 24157550271834722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109903483) 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, 77690 + ... + 79091.

It is an arithmetic number, because the mean of its divisors is an integer number (27515241).

Almost surely, 2109903481 is an apocalyptic number.

It is an amenable number.

109903481 is a deficient number, since it is larger than the sum of its proper divisors (157483).

109903481 is an equidigital number, since it uses as much as digits as its factorization.

109903481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157482.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 109903481 is about 10483.4861091147. The cubic root of 109903481 is about 479.0018043786.

The spelling of 109903481 in words is "one hundred nine million, nine hundred three thousand, four hundred eighty-one".

Divisors: 1 701 156781 109903481