2001371 has 2 divisors, whose sum is σ = 2001372.
Its totient is φ = 2001370.
The previous prime is 2001361. The next prime is 2001397. The reversal of 2001371 is 1731002.
Adding to 2001371 its reverse (1731002), we get a palindrome (3732373).
It can be divided in two parts, 2001 and 371, that multiplied together give a triangular number (742371 = T1218).
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2001371 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (2001331) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000685 + 1000686.
It is an arithmetic number, because the mean of its divisors is an integer number (1000686).
22001371 is an apocalyptic number.
2001371 is a deficient number, since it is larger than the sum of its proper divisors (1).
2001371 is an equidigital number, since it uses as much as digits as its factorization.
2001371 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 42, while the sum is 14.
The square root of 2001371 is about 1414.6982010309.
The cubic root of 2001371 is about 126.0208876097.
The spelling of 2001371 in words is "two million, one thousand, three hundred seventy-one".