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31044131022 = 2347719291669
BaseRepresentation
bin11100111010010111…
…111101100011001110
32222010112000020212110
4130322113331203032
51002034244143042
622132251244450
72146205521422
oct347227754316
988115006773
1031044131022
111219066a133
126024749726
132c097b41c8
141706da2b82
15c1a62609c
hex73a5fd8ce

31044131022 has 64 divisors (see below), whose sum is σ = 64410163200. Its totient is φ = 9968501760.

The previous prime is 31044130993. The next prime is 31044131057. The reversal of 31044131022 is 22013144013.

It is a super-2 number, since 2×310441310222 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31044131022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18599604 + ... + 18601272.

It is an arithmetic number, because the mean of its divisors is an integer number (1006408800).

Almost surely, 231044131022 is an apocalyptic number.

31044131022 is an abundant number, since it is smaller than the sum of its proper divisors (33366032178).

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

31044131022 is a wasteful number, since it uses less digits than its factorization.

31044131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31044131022 its reverse (22013144013), we get a palindrome (53057275035).

The spelling of 31044131022 in words is "thirty-one billion, forty-four million, one hundred thirty-one thousand, twenty-two".

Divisors: 1 2 3 6 47 71 94 141 142 213 282 426 929 1669 1858 2787 3337 3338 5007 5574 6674 10011 10014 20022 43663 65959 78443 87326 118499 130989 131918 156886 197877 235329 236998 261978 355497 395754 470658 710994 1550501 3100073 3101002 4651503 5569453 6200146 9300219 9303006 11138906 16708359 18600438 33416718 72873547 110085571 145747094 218620641 220171142 330256713 437241282 660513426 5174021837 10348043674 15522065511 31044131022