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1312233013 = 71314420143
BaseRepresentation
bin100111000110111…
…0001011000110101
310101110012100021201
41032031301120311
510141412424023
6334113412501
744342540140
oct11615613065
93343170251
101312233013
116137a30a3
1230756a131
1317bb2c050
14c63c7057
157a309bad
hex4e371635

1312233013 has 8 divisors (see below), whose sum is σ = 1615056128. Its totient is φ = 1038250224.

The previous prime is 1312233011. The next prime is 1312233031. The reversal of 1312233013 is 3103322131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312233013 - 21 = 1312233011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312233011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7209981 + ... + 7210162.

It is an arithmetic number, because the mean of its divisors is an integer number (201882016).

Almost surely, 21312233013 is an apocalyptic number.

1312233013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1312233013 is a deficient number, since it is larger than the sum of its proper divisors (302823115).

1312233013 is a wasteful number, since it uses less digits than its factorization.

1312233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14420163.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1312233013 is about 36224.7569073969. The cubic root of 1312233013 is about 1094.8055402755.

Adding to 1312233013 its reverse (3103322131), we get a palindrome (4415555144).

The spelling of 1312233013 in words is "one billion, three hundred twelve million, two hundred thirty-three thousand, thirteen".

Divisors: 1 7 13 91 14420143 100941001 187461859 1312233013