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311112241 = 11251281401
BaseRepresentation
bin10010100010110…
…011001000110001
3210200102010202121
4102202303020301
51114121042431
650512114241
710465260526
oct2242631061
9720363677
10311112241
1114a684260
1288235981
134c5bb9ab
142d46714d
151c4a6611
hex128b3231

311112241 has 16 divisors (see below), whose sum is σ = 342812736. Its totient is φ = 280000000.

The previous prime is 311112239. The next prime is 311112247. The reversal of 311112241 is 142211113.

It is a cyclic number.

It is not a de Polignac number, because 311112241 - 21 = 311112239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311112247) 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, 775641 + ... + 776041.

It is an arithmetic number, because the mean of its divisors is an integer number (21425796).

Almost surely, 2311112241 is an apocalyptic number.

It is an amenable number.

311112241 is a deficient number, since it is larger than the sum of its proper divisors (31700495).

311112241 is a wasteful number, since it uses less digits than its factorization.

311112241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its digits is 48, while the sum is 16.

The square root of 311112241 is about 17638.3741030742. The cubic root of 311112241 is about 677.5983915053.

Adding to 311112241 its reverse (142211113), we get a palindrome (453323354).

The spelling of 311112241 in words is "three hundred eleven million, one hundred twelve thousand, two hundred forty-one".

Divisors: 1 11 251 281 401 2761 3091 4411 70531 100651 112681 775841 1107161 1239491 28282931 311112241