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1313310311312 = 243113131763761
BaseRepresentation
bin10011000111000111011…
…001010000001110010000
311122112212212001022210012
4103013013121100032100
5133004124414430222
62443154301454052
7163612024312616
oct23070731201620
94575785038705
101313310311312
11466a7648407a
12192640b71328
1396ac98673ac
14477c920d6b6
15242677211e2
hex131c7650390

1313310311312 has 80 divisors (see below), whose sum is σ = 2655061922304. Its totient is φ = 628622592000.

The previous prime is 1313310311293. The next prime is 1313310311329. The reversal of 1313310311312 is 2131130133131.

It is a super-2 number, since 2×13133103113122 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20565512 + ... + 20629272.

Almost surely, 21313310311312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313310311312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327530961152).

1313310311312 is an abundant number, since it is smaller than the sum of its proper divisors (1341751610992).

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

1313310311312 is a wasteful number, since it uses less digits than its factorization.

1313310311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64248 (or 64242 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1313310311312 its reverse (2131130133131), we get a palindrome (3444440444443).

The spelling of 1313310311312 in words is "one trillion, three hundred thirteen billion, three hundred ten million, three hundred eleven thousand, three hundred twelve".

Divisors: 1 2 4 8 16 31 62 124 131 248 262 317 496 524 634 1048 1268 2096 2536 4061 5072 8122 9827 16244 19654 32488 39308 41527 63761 64976 78616 83054 127522 157232 166108 255044 332216 510088 664432 1020176 1287337 1976591 2574674 3953182 5149348 7906364 8352691 10298696 15812728 16705382 20212237 20597392 31625456 33410764 40424474 66821528 80848948 133643056 161697896 258933421 323395792 517866842 626579347 1035733684 1253158694 2071467368 2506317388 2647803047 4142934736 5012634776 5295606094 10025269552 10591212188 21182424376 42364848752 82081894457 164163788914 328327577828 656655155656 1313310311312