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31113001101 = 37131734611429
BaseRepresentation
bin11100111110011110…
…101011100010001101
32222022022121012212010
4130332132223202031
51002204412013401
622143151331433
72151003101010
oct347636534215
988268535763
1031113001101
1112216529256
126043820b79
132c1ab48630
1417121ad377
15c216cbed6
hex73e7ab88d

31113001101 has 64 divisors (see below), whose sum is σ = 51499768320. Its totient is φ = 16269603840.

The previous prime is 31113001097. The next prime is 31113001111. The reversal of 31113001101 is 10110031113.

It is not a de Polignac number, because 31113001101 - 22 = 31113001097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113001111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21771855 + ... + 21773283.

It is an arithmetic number, because the mean of its divisors is an integer number (804683880).

Almost surely, 231113001101 is an apocalyptic number.

It is an amenable number.

31113001101 is a deficient number, since it is larger than the sum of its proper divisors (20386767219).

31113001101 is a wasteful number, since it uses less digits than its factorization.

31113001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 31113001101 its reverse (10110031113), we get a palindrome (41223032214).

The spelling of 31113001101 in words is "thirty-one billion, one hundred thirteen million, one thousand, one hundred one".

Divisors: 1 3 7 13 21 39 91 173 273 461 519 1211 1383 1429 2249 3227 3633 4287 5993 6747 9681 10003 15743 17979 18577 30009 41951 47229 55731 79753 125853 130039 239259 247217 390117 558271 658769 741651 1036789 1674813 1730519 1976307 3110367 3213821 4611383 5191557 7257523 8563997 9641463 13834149 21772569 22496747 25691991 59947979 67490241 113967037 179843937 341901111 797769259 1481571481 2393307777 4444714443 10371000367 31113001101