1001322013 has 4 divisors (see below), whose sum is σ = 1001731680. Its totient is φ = 1000912348.

The previous prime is 1001321999. The next prime is 1001322029. The reversal of 1001322013 is 3102231001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001322013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001321984 and 1001322002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001322053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201145 + ... + 206062.

It is an arithmetic number, because the mean of its divisors is an integer number (250432920).

Almost surely, 2^1001322013 is an apocalyptic number.

It is an amenable number.

1001322013 is a deficient number, since it is larger than the sum of its proper divisors (409667).

1001322013 is an equidigital number, since it uses as much as digits as its factorization.

1001322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409666.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1001322013 is about 31643.6725586649. The cubic root of 1001322013 is about 1000.4404769516.

Adding to 1001322013 its reverse (3102231001), we get a palindrome (4103553014).

The spelling of 1001322013 in words is "one billion, one million, three hundred twenty-two thousand, thirteen".