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31103114540 = 22564711292129
BaseRepresentation
bin11100111101111000…
…111101110100101100
32222021121222221001012
4130331320331310230
51002144344131130
622142155404352
72150523053141
oct347570756454
988247887035
1031103114540
1112210996343
1260404536b8
132c18a965b4
141710b583c8
15c208c7995
hex73de3dd2c

31103114540 has 48 divisors (see below), whose sum is σ = 65506190400. Its totient is φ = 12405184512.

The previous prime is 31103114467. The next prime is 31103114543. The reversal of 31103114540 is 4541130113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31103114543) 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, 14608196 + ... + 14610324.

It is an arithmetic number, because the mean of its divisors is an integer number (1364712300).

Almost surely, 231103114540 is an apocalyptic number.

It is an amenable number.

31103114540 is an abundant number, since it is smaller than the sum of its proper divisors (34403075860).

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

31103114540 is a wasteful number, since it uses less digits than its factorization.

31103114540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914 (or 3912 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 31103114540 its reverse (4541130113), we get a palindrome (35644244653).

The spelling of 31103114540 in words is "thirty-one billion, one hundred three million, one hundred fourteen thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 647 1129 1294 2129 2258 2588 3235 4258 4516 5645 6470 8516 10645 11290 12940 21290 22580 42580 730463 1377463 1460926 2403641 2754926 2921852 3652315 4807282 5509852 6887315 7304630 9614564 12018205 13774630 14609260 24036410 27549260 48072820 1555155727 3110311454 6220622908 7775778635 15551557270 31103114540