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101301805 = 5112167441
BaseRepresentation
bin1100000100110…
…11111000101101
321001121122221201
412002123320231
5201413124210
614015125501
72340023353
oct602337055
9231548851
10101301805
1152200600
1229b13891
1317cab1c7
14d64d7d3
158d6053a
hex609be2d

101301805 has 12 divisors (see below), whose sum is σ = 133618716. Its totient is φ = 73673600.

The previous prime is 101301803. The next prime is 101301829. The reversal of 101301805 is 508103101.

It can be written as a sum of positive squares in 2 ways, for example, as 66797929 + 34503876 = 8173^2 + 5874^2 .

It is not a de Polignac number, because 101301805 - 21 = 101301803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101301803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83116 + ... + 84325.

It is an arithmetic number, because the mean of its divisors is an integer number (11134893).

Almost surely, 2101301805 is an apocalyptic number.

It is an amenable number.

101301805 is a deficient number, since it is larger than the sum of its proper divisors (32316911).

101301805 is a wasteful number, since it uses less digits than its factorization.

101301805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167468 (or 167457 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 101301805 is about 10064.8797807028. The cubic root of 101301805 is about 466.1643537864.

Adding to 101301805 its reverse (508103101), we get a palindrome (609404906).

It can be divided in two parts, 10130 and 1805, that added together give a triangular number (11935 = T154).

The spelling of 101301805 in words is "one hundred one million, three hundred one thousand, eight hundred five".

Divisors: 1 5 11 55 121 605 167441 837205 1841851 9209255 20260361 101301805