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313033212 = 223261142547
BaseRepresentation
bin10010101010001…
…000000111111100
3210211000201211200
4102222020013330
51120114030322
651021215500
710520511162
oct2252100774
9724021750
10313033212
11150776538
1288a01590
134cb1216b
142d807232
151c7358ac
hex12a881fc

313033212 has 36 divisors (see below), whose sum is σ = 804255816. Its totient is φ = 102633120.

The previous prime is 313033141. The next prime is 313033219. The reversal of 313033212 is 212330313.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313033219) 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 11 ways as a sum of consecutive naturals, for example, 69078 + ... + 73469.

Almost surely, 2313033212 is an apocalyptic number.

It is an amenable number.

313033212 is an abundant number, since it is smaller than the sum of its proper divisors (491222604).

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

313033212 is a wasteful number, since it uses less digits than its factorization.

313033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142618 (or 142613 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 313033212 is about 17692.7446146719. The cubic root of 313033212 is about 678.9901475156.

Adding to 313033212 its reverse (212330313), we get a palindrome (525363525).

The spelling of 313033212 in words is "three hundred thirteen million, thirty-three thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 61 122 183 244 366 549 732 1098 2196 142547 285094 427641 570188 855282 1282923 1710564 2565846 5131692 8695367 17390734 26086101 34781468 52172202 78258303 104344404 156516606 313033212