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31130410344 = 23311117918221
BaseRepresentation
bin11100111111100001…
…000101110101101000
32222100112100200211220
4130333201011311220
51002223341112334
622145012422040
72151304056555
oct347741056550
988315320756
1031130410344
111222533a060
126049617920
132c21632767
141714621a2c
15c22eba449
hex73f845d68

31130410344 has 32 divisors (see below), whose sum is σ = 84901119840. Its totient is φ = 9433457600.

The previous prime is 31130410327. The next prime is 31130410351. The reversal of 31130410344 is 44301403113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58958847 + ... + 58959374.

It is an arithmetic number, because the mean of its divisors is an integer number (2653159995).

Almost surely, 231130410344 is an apocalyptic number.

It is an amenable number.

31130410344 is an abundant number, since it is smaller than the sum of its proper divisors (53770709496).

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

31130410344 is a wasteful number, since it uses less digits than its factorization.

31130410344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117918241 (or 117918237 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31130410344 its reverse (44301403113), we get a palindrome (75431813457).

The spelling of 31130410344 in words is "thirty-one billion, one hundred thirty million, four hundred ten thousand, three hundred forty-four".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 117918221 235836442 353754663 471672884 707509326 943345768 1297100431 1415018652 2594200862 2830037304 3891301293 5188401724 7782602586 10376803448 15565205172 31130410344