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109101801 = 31710719993
BaseRepresentation
bin1101000000011…
…00001011101001
321121021221112110
412200030023221
5210412224201
614454232533
72463231024
oct640141351
9247257473
10109101801
1156648886
1230655749
13197ac5a3
14106c01bb
1598a16d6
hex680c2e9

109101801 has 16 divisors (see below), whose sum is σ = 155473344. Its totient is φ = 67812864.

The previous prime is 109101787. The next prime is 109101833. The reversal of 109101801 is 108101901.

It is not a de Polignac number, because 109101801 - 215 = 109069033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109101701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4540 + ... + 15453.

It is an arithmetic number, because the mean of its divisors is an integer number (9717084).

Almost surely, 2109101801 is an apocalyptic number.

It is an amenable number.

109101801 is a deficient number, since it is larger than the sum of its proper divisors (46371543).

109101801 is a wasteful number, since it uses less digits than its factorization.

109101801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20120.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 109101801 is about 10445.1807547787. The cubic root of 109101801 is about 477.8342839824.

The spelling of 109101801 in words is "one hundred nine million, one hundred one thousand, eight hundred one".

Divisors: 1 3 17 51 107 321 1819 5457 19993 59979 339881 1019643 2139251 6417753 36367267 109101801