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31230034044 = 223111731367579
BaseRepresentation
bin11101000101011101…
…001000000001111100
32222121110211002212120
4131011131020001330
51002424342042134
622202532002540
72153623623636
oct350535100174
988543732776
1031230034044
11122765a38a0
126076a60450
132c39173bb1
141723955a56
15c2bae8649
hex74574807c

31230034044 has 48 divisors (see below), whose sum is σ = 79954197120. Its totient is φ = 9408936640.

The previous prime is 31230034009. The next prime is 31230034081. The reversal of 31230034044 is 44043003213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660954 + ... + 706625.

It is an arithmetic number, because the mean of its divisors is an integer number (1665712440).

Almost surely, 231230034044 is an apocalyptic number.

It is an amenable number.

31230034044 is an abundant number, since it is smaller than the sum of its proper divisors (48724163076).

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

31230034044 is a wasteful number, since it uses less digits than its factorization.

31230034044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367770 (or 1367768 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31230034044 its reverse (44043003213), we get a palindrome (75273037257).

The spelling of 31230034044 in words is "thirty-one billion, two hundred thirty million, thirty-four thousand, forty-four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 173 346 519 692 1038 1903 2076 3806 5709 7612 11418 22836 1367579 2735158 4102737 5470316 8205474 15043369 16410948 30086738 45130107 60173476 90260214 180520428 236591167 473182334 709773501 946364668 1419547002 2602502837 2839094004 5205005674 7807508511 10410011348 15615017022 31230034044