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311201201 = 17234911621
BaseRepresentation
bin10010100011001…
…000110110110001
3210200120122210102
4102203020312301
51114131414301
650514042145
710466111063
oct2243106661
9720518712
10311201201
1114a735083
1288279355
134c62032c
142d48b733
151c4c2b6b
hex128c8db1

311201201 has 16 divisors (see below), whose sum is σ = 344746368. Its totient is φ = 279417600.

The previous prime is 311201179. The next prime is 311201207. The reversal of 311201201 is 102102113.

It is a cyclic number.

It is not a de Polignac number, because 311201201 - 210 = 311200177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311201207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191171 + ... + 192791.

It is an arithmetic number, because the mean of its divisors is an integer number (21546648).

Almost surely, 2311201201 is an apocalyptic number.

It is an amenable number.

311201201 is a deficient number, since it is larger than the sum of its proper divisors (33545167).

311201201 is a wasteful number, since it uses less digits than its factorization.

311201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 311201201 is about 17640.8956972145. The cubic root of 311201201 is about 677.6629699226.

Adding to 311201201 its reverse (102102113), we get a palindrome (413303314).

The spelling of 311201201 in words is "three hundred eleven million, two hundred one thousand, two hundred one".

Divisors: 1 17 23 391 491 1621 8347 11293 27557 37283 191981 633811 795911 13530487 18305953 311201201