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1312001 is a prime number
BaseRepresentation
bin101000000010100000001
32110122201122
411000110001
5313441001
644042025
714103035
oct5002401
92418648
101312001
118167a9
12533315
1336c242
142621c5
151adb1b
hex140501

1312001 has 2 divisors, whose sum is σ = 1312002. Its totient is φ = 1312000.

The previous prime is 1311991. The next prime is 1312019. The reversal of 1312001 is 1002131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1100401 + 211600 = 1049^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312001 - 214 = 1295617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312001.

It is not a weakly prime, because it can be changed into another prime (1312301) 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 as a sum of consecutive naturals, namely, 656000 + 656001.

It is an arithmetic number, because the mean of its divisors is an integer number (656001).

21312001 is an apocalyptic number.

It is an amenable number.

1312001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312001 is an equidigital number, since it uses as much as digits as its factorization.

1312001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1312001 is about 1145.4261215810. The cubic root of 1312001 is about 109.4741013095.

Adding to 1312001 its reverse (1002131), we get a palindrome (2314132).

The spelling of 1312001 in words is "one million, three hundred twelve thousand, one".