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311141444 = 22211368651
BaseRepresentation
bin10010100010111…
…010010001000100
3210200110121211012
4102202322101010
51114123011234
650512501352
710465441625
oct2242722104
9720417735
10311141444
1114a6a4199
128824a858
134c5cc083
142d473a4c
151c4b00ce
hex128ba444

311141444 has 12 divisors (see below), whose sum is σ = 547079568. Its totient is φ = 154833000.

The previous prime is 311141437. The next prime is 311141449. The reversal of 311141444 is 444141113.

It is a super-3 number, since 3×3111414443 (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (311141449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183482 + ... + 185169.

It is an arithmetic number, because the mean of its divisors is an integer number (45589964).

Almost surely, 2311141444 is an apocalyptic number.

It is an amenable number.

311141444 is a deficient number, since it is larger than the sum of its proper divisors (235938124).

311141444 is a wasteful number, since it uses less digits than its factorization.

311141444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368866 (or 368864 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 311141444 is about 17639.2019093835. The cubic root of 311141444 is about 677.6195920926.

Adding to 311141444 its reverse (444141113), we get a palindrome (755282557).

The spelling of 311141444 in words is "three hundred eleven million, one hundred forty-one thousand, four hundred forty-four".

Divisors: 1 2 4 211 422 844 368651 737302 1474604 77785361 155570722 311141444