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2031001105 = 57193319227
BaseRepresentation
bin111100100001110…
…1001111000010001
312020112200112202011
41321003221320101
513124414013410
6533311222521
7101221140010
oct17103517021
95215615664
102031001105
119524a1211
12488217a41
13264a0cc03
14153a48a77
15bd48818a
hex790e9e11

2031001105 has 32 divisors (see below), whose sum is σ = 2941148160. Its totient is φ = 1315258560.

The previous prime is 2031001103. The next prime is 2031001117. The reversal of 2031001105 is 5011001302.

It is not a de Polignac number, because 2031001105 - 21 = 2031001103 is a prime.

It is a super-2 number, since 2×20310011052 = 8249930977022442050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2031001103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215502 + ... + 224728.

It is an arithmetic number, because the mean of its divisors is an integer number (91910880).

Almost surely, 22031001105 is an apocalyptic number.

It is an amenable number.

2031001105 is a deficient number, since it is larger than the sum of its proper divisors (910147055).

2031001105 is a wasteful number, since it uses less digits than its factorization.

2031001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2031001105 is about 45066.6296166021. The cubic root of 2031001105 is about 1266.3975254193.

Adding to 2031001105 its reverse (5011001302), we get a palindrome (7042002407).

The spelling of 2031001105 in words is "two billion, thirty-one million, one thousand, one hundred five".

Divisors: 1 5 7 19 35 95 133 331 665 1655 2317 6289 9227 11585 31445 44023 46135 64589 175313 220115 322945 876565 1227191 3054137 6135955 15270685 21378959 58028603 106894795 290143015 406200221 2031001105