1312008 has 16 divisors (see below), whose sum is σ = 3280080. Its totient is φ = 437328.
The previous prime is 1312001. The next prime is 1312019. The reversal of 1312008 is 8002131.
It is a happy number.
It is a super-3 number, since 3×13120083 = 6775333921523713536, which contains 333 as substring.
It is a nialpdrome in base 12.
It is not an unprimeable number, because it can be changed into a prime (1312001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27310 + ... + 27357.
It is an arithmetic number, because the mean of its divisors is an integer number (205005).
21312008 is an apocalyptic number.
It is an amenable number.
1312008 is an abundant number, since it is smaller than the sum of its proper divisors (1968072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312008 is a wasteful number, since it uses less digits than its factorization.
1312008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 54676 (or 54672 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 15.
The square root of 1312008 is about 1145.4291772083. The cubic root of 1312008 is about 109.4742960038.
Adding to 1312008 its reverse (8002131), we get a palindrome (9314139).
It can be divided in two parts, 13 and 12008, that added together give a palindrome (12021).
The spelling of 1312008 in words is "one million, three hundred twelve thousand, eight".
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