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115111141 = 1311794909
BaseRepresentation
bin1101101110001…
…11010011100101
322000121020210121
412313013103211
5213432024031
615231121541
72565266665
oct667072345
9260536717
10115111141
1159a82782
12326732b1
131ab04902
14114061a5
15a18c011
hex6dc74e5

115111141 has 8 divisors (see below), whose sum is σ = 116661600. Its totient is φ = 113571120.

The previous prime is 115111127. The next prime is 115111147. The reversal of 115111141 is 141111511.

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 115111141 - 223 = 106722533 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 (115111147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20995 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (14582700).

Almost surely, 2115111141 is an apocalyptic number.

It is an amenable number.

115111141 is a deficient number, since it is larger than the sum of its proper divisors (1550459).

115111141 is a wasteful number, since it uses less digits than its factorization.

115111141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219.

The product of its digits is 20, while the sum is 16.

The square root of 115111141 is about 10728.9860191912. The cubic root of 115111141 is about 486.4510213573.

Adding to 115111141 its reverse (141111511), we get a palindrome (256222652).

The spelling of 115111141 in words is "one hundred fifteen million, one hundred eleven thousand, one hundred forty-one".

Divisors: 1 131 179 4909 23449 643079 878711 115111141