1001313013 has 4 divisors (see below), whose sum is σ = 1018284480. Its totient is φ = 984341548.

The previous prime is 1001313011. The next prime is 1001313031. The reversal of 1001313013 is 3103131001.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3103131001 = 9811 ⋅316291.

It is a cyclic number.

It is not a de Polignac number, because 1001313013 - 2¹ = 1001313011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001312984 and 1001313002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001313011) 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, 8485645 + ... + 8485762.

It is an arithmetic number, because the mean of its divisors is an integer number (254571120).

Almost surely, 2^1001313013 is an apocalyptic number.

It is an amenable number.

1001313013 is a deficient number, since it is larger than the sum of its proper divisors (16971467).

1001313013 is an equidigital number, since it uses as much as digits as its factorization.

1001313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971466.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 1001313013 is about 31643.5303498203. The cubic root of 1001313013 is about 1000.4374795837.

Adding to 1001313013 its reverse (3103131001), we get a palindrome (4104444014).

The spelling of 1001313013 in words is "one billion, one million, three hundred thirteen thousand, thirteen".