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31284058641 = 3111376919721
BaseRepresentation
bin11101001000101011…
…001101101000010001
32222202020110211200120
4131020223031220101
51003032204334031
622212141540453
72155151053023
oct351053155021
988666424616
1031284058641
11122a4043320
126090b74729
132c4740b104
14172abba013
15c3171aa96
hex748acda11

31284058641 has 16 divisors (see below), whose sum is σ = 45836238528. Its totient is φ = 18821638400.

The previous prime is 31284058639. The next prime is 31284058651. The reversal of 31284058641 is 14685048213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31284058641 - 21 = 31284058639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31284058593 and 31284058602.

It is not an unprimeable number, because it can be changed into a prime (31284058601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3455340 + ... + 3464381.

It is an arithmetic number, because the mean of its divisors is an integer number (2864764908).

Almost surely, 231284058641 is an apocalyptic number.

It is an amenable number.

31284058641 is a deficient number, since it is larger than the sum of its proper divisors (14552179887).

31284058641 is a wasteful number, since it uses less digits than its factorization.

31284058641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919872.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 31284058641 in words is "thirty-one billion, two hundred eighty-four million, fifty-eight thousand, six hundred forty-one".

Divisors: 1 3 11 33 137 411 1507 4521 6919721 20759163 76116931 228350793 948001777 2844005331 10428019547 31284058641