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12020322013 = 719312915431
BaseRepresentation
bin10110011000111011…
…11000111011011101
31011000201100121220121
423030131320323131
5144104200301023
65304433114541
7603606023410
oct131435707335
934021317817
1012020322013
115109181927
1223b56b8a51
13119742b69b
148205cbb77
154a5436d5d
hex2cc778edd

12020322013 has 16 divisors (see below), whose sum is σ = 14927011840. Its totient is φ = 9445993200.

The previous prime is 12020321987. The next prime is 12020322079. The reversal of 12020322013 is 31022302021.

It is not a de Polignac number, because 12020322013 - 213 = 12020313821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020326013) 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, 1453593 + ... + 1461838.

It is an arithmetic number, because the mean of its divisors is an integer number (932938240).

Almost surely, 212020322013 is an apocalyptic number.

It is an amenable number.

12020322013 is a deficient number, since it is larger than the sum of its proper divisors (2906689827).

12020322013 is a wasteful number, since it uses less digits than its factorization.

12020322013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915488.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12020322013 its reverse (31022302021), we get a palindrome (43042624034).

The spelling of 12020322013 in words is "twelve billion, twenty million, three hundred twenty-two thousand, thirteen".

Divisors: 1 7 19 31 133 217 589 4123 2915431 20408017 55393189 90378361 387752323 632648527 1717188859 12020322013