1001013 has 8 divisors (see below), whose sum is σ = 1437408.
Its totient is φ = 615984.
The previous prime is 1001003. The next prime is 1001017. The reversal of 1001013 is 3101001.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1001013 - 25 = 1000981 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 1000992 and 1001010.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1001017) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12795 + ... + 12872.
It is an arithmetic number, because the mean of its divisors is an integer number (179676).
21001013 is an apocalyptic number.
1001013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.
It is an amenable number.
1001013 is a deficient number, since it is larger than the sum of its proper divisors (436395).
1001013 is a wasteful number, since it uses less digits than its factorization.
1001013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25683.
The product of its (nonzero) digits is 3, while the sum is 6.
The square root of 1001013 is about 1000.5063717938.
The cubic root of 1001013 is about 100.0337552712.
Adding to 1001013 its reverse (3101001), we get a palindrome (4102014).
The spelling of 1001013 in words is "one million, one thousand, thirteen".