2001311015043 has 4 divisors (see below), whose sum is σ = 2668414686728. Its totient is φ = 1334207343360.

The previous prime is 2001311014973. The next prime is 2001311015057. The reversal of 2001311015043 is 3405101131002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2001311015043 - 2¹² = 2001311010947 is a prime.

It is a super-3 number, since 3×2001311015043³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001310015043) 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, 333551835838 + ... + 333551835843.

It is an arithmetic number, because the mean of its divisors is an integer number (667103671682).

Almost surely, 2^{2001311015043} is an apocalyptic number.

2001311015043 is a deficient number, since it is larger than the sum of its proper divisors (667103671685).

2001311015043 is an equidigital number, since it uses as much as digits as its factorization.

2001311015043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667103671684.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 2001311015043 its reverse (3405101131002), we get a palindrome (5406412146045).

The spelling of 2001311015043 in words is "two trillion, one billion, three hundred eleven million, fifteen thousand, forty-three".