2001440313 has 8 divisors (see below), whose sum is σ = 2965096800. Its totient is φ = 1334293524.

The previous prime is 2001440279. The next prime is 2001440327. The reversal of 2001440313 is 3130441002.

It is not a de Polignac number, because 2001440313 - 2¹⁶ = 2001374777 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2001440393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37063683 + ... + 37063736.

It is an arithmetic number, because the mean of its divisors is an integer number (370637100).

Almost surely, 2^2001440313 is an apocalyptic number.

It is an amenable number.

2001440313 is a deficient number, since it is larger than the sum of its proper divisors (963656487).

2001440313 is an equidigital number, since it uses as much as digits as its factorization.

2001440313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74127428 (or 74127422 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2001440313 is about 44737.4598407196. The cubic root of 2001440313 is about 1260.2234240988.

Adding to 2001440313 its reverse (3130441002), we get a palindrome (5131881315).

The spelling of 2001440313 in words is "two billion, one million, four hundred forty thousand, three hundred thirteen".