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31850538041 = 731433413411
BaseRepresentation
bin11101101010011100…
…001010010000111001
310001012201101222100002
4131222130022100321
51010212214204131
622344255322345
72205200051330
oct355234122071
9101181358302
1031850538041
1112564886713
12620a8203b5
13300789b41a
141782118d17
15c663166cb
hex76a70a439

31850538041 has 16 divisors (see below), whose sum is σ = 38448672768. Its totient is φ = 25805379600.

The previous prime is 31850538019. The next prime is 31850538053. The reversal of 31850538041 is 14083505813.

It is not a de Polignac number, because 31850538041 - 230 = 30776796217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31850537986 and 31850538004.

It is not an unprimeable number, because it can be changed into a prime (31850538091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1697375 + ... + 1716036.

It is an arithmetic number, because the mean of its divisors is an integer number (2403042048).

Almost surely, 231850538041 is an apocalyptic number.

31850538041 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31850538041 is a deficient number, since it is larger than the sum of its proper divisors (6598134727).

31850538041 is a wasteful number, since it uses less digits than its factorization.

31850538041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413492.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 31850538041 in words is "thirty-one billion, eight hundred fifty million, five hundred thirty-eight thousand, forty-one".

Divisors: 1 7 31 43 217 301 1333 9331 3413411 23893877 105815741 146776673 740710187 1027436711 4550076863 31850538041