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1212224313 = 31993202747
BaseRepresentation
bin100100001000001…
…0001001100111001
310010111000101010210
41020100101030321
54440312134223
6320142101333
742016510446
oct11020211471
93114011123
101212224313
115722a6083
12299b7a849
131641b45c1
14b6dd29cd
1571652893
hex48411339

1212224313 has 8 divisors (see below), whose sum is σ = 1617118048. Its totient is φ = 807740064.

The previous prime is 1212224311. The next prime is 1212224333. The reversal of 1212224313 is 3134222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212224313 - 21 = 1212224311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212224313.

It is not an unprimeable number, because it can be changed into a prime (1212224311) 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 7 ways as a sum of consecutive naturals, for example, 95395 + ... + 107352.

It is an arithmetic number, because the mean of its divisors is an integer number (202139756).

Almost surely, 21212224313 is an apocalyptic number.

It is an amenable number.

1212224313 is a deficient number, since it is larger than the sum of its proper divisors (404893735).

1212224313 is a wasteful number, since it uses less digits than its factorization.

1212224313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204743.

The product of its digits is 576, while the sum is 21.

The square root of 1212224313 is about 34817.0118332978. The cubic root of 1212224313 is about 1066.2547937940.

Adding to 1212224313 its reverse (3134222121), we get a palindrome (4346446434).

The spelling of 1212224313 in words is "one billion, two hundred twelve million, two hundred twenty-four thousand, three hundred thirteen".