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31054515102 = 2331353818221
BaseRepresentation
bin11100111010111111…
…100100101110011110
32222011020112211011000
4130322333210232132
51002044423440402
622133302011130
72146363010622
oct347277445636
988136484130
1031054515102
1112196511916
126028116aa6
132c0b9ab830
141708507182
15c1b4c7c1c
hex73afe4b9e

31054515102 has 64 divisors (see below), whose sum is σ = 74341350720. Its totient is φ = 9552297600.

The previous prime is 31054515101. The next prime is 31054515109. The reversal of 31054515102 is 20151545013.

31054515102 is a `hidden beast` number, since 3 + 1 + 0 + 545 + 15 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054515101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3773352 + ... + 3781572.

It is an arithmetic number, because the mean of its divisors is an integer number (1161583605).

Almost surely, 231054515102 is an apocalyptic number.

31054515102 is an abundant number, since it is smaller than the sum of its proper divisors (43286835618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31054515102 is a wasteful number, since it uses less digits than its factorization.

31054515102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13626 (or 13620 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 31054515102 in words is "thirty-one billion, fifty-four million, five hundred fifteen thousand, one hundred two".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 117 234 351 702 5381 8221 10762 16143 16442 24663 32286 48429 49326 69953 73989 96858 106873 139906 145287 147978 209859 213746 221967 290574 320619 419718 443934 629577 641238 961857 1259154 1888731 1923714 2885571 3777462 5771142 44237201 88474402 132711603 265423206 398134809 575083613 796269618 1150167226 1194404427 1725250839 2388808854 3450501678 5175752517 10351505034 15527257551 31054515102