Search a number
-
+
311320303112 = 23713887482117
BaseRepresentation
bin1001000011111000010…
…00101101011000001000
31002202120110002000020202
410201330020231120020
520100040444144422
6355004002311332
731330543625450
oct4417410553010
91082513060222
10311320303112
11110037216605
1250404658548
1323485212410
14110d478cd60
15817141cb92
hex487c22d608

311320303112 has 64 divisors (see below), whose sum is σ = 719242917120. Its totient is φ = 123020575488.

The previous prime is 311320303097. The next prime is 311320303157. The reversal of 311320303112 is 211303023113.

Adding to 311320303112 its reverse (211303023113), we get a palindrome (522623326225).

It is a super-2 number, since 2×3113203031122 (a number of 24 digits) contains 22 as substring.

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, 404678 + ... + 886794.

It is an arithmetic number, because the mean of its divisors is an integer number (11238170580).

Almost surely, 2311320303112 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 311320303112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359621458560).

311320303112 is an abundant number, since it is smaller than the sum of its proper divisors (407922614008).

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

311320303112 is a wasteful number, since it uses less digits than its factorization.

311320303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483030 (or 483026 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 311320303112 in words is "three hundred eleven billion, three hundred twenty million, three hundred three thousand, one hundred twelve".

Divisors: 1 2 4 7 8 13 14 26 28 52 56 91 104 182 364 728 887 1774 3548 6209 7096 11531 12418 23062 24836 46124 49672 80717 92248 161434 322868 482117 645736 964234 1928468 3374819 3856936 6267521 6749638 12535042 13499276 25070084 26998552 43872647 50140168 87745294 175490588 350981176 427637779 855275558 1710551116 2993464453 3421102232 5559291127 5986928906 11118582254 11973857812 22237164508 23947715624 38915037889 44474329016 77830075778 155660151556 311320303112