2001311313 has 4 divisors (see below), whose sum is σ = 2668415088. Its totient is φ = 1334207540.

The previous prime is 2001311243. The next prime is 2001311353. The reversal of 2001311313 is 3131131002.

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 not a de Polignac number, because 2001311313 - 2⁸ = 2001311057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001311292 and 2001311301.

It is not an unprimeable number, because it can be changed into a prime (2001311353) 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, 333551883 + ... + 333551888.

It is an arithmetic number, because the mean of its divisors is an integer number (667103772).

Almost surely, 2^2001311313 is an apocalyptic number.

It is an amenable number.

2001311313 is a deficient number, since it is larger than the sum of its proper divisors (667103775).

2001311313 is an equidigital number, since it uses as much as digits as its factorization.

2001311313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667103774.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 2001311313 is about 44736.0180726895. The cubic root of 2001311313 is about 1260.1963482119.

Adding to 2001311313 its reverse (3131131002), we get a palindrome (5132442315).

The spelling of 2001311313 in words is "two billion, one million, three hundred eleven thousand, three hundred thirteen".