2001311131209 has 8 divisors (see below), whose sum is σ = 2873677521792. Its totient is φ = 1231576080720.

The previous prime is 2001311131207. The next prime is 2001311131223. The reversal of 2001311131209 is 9021311131002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001311131209 - 2¹ = 2001311131207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001311131207) 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, 25657834977 + ... + 25657835054.

It is an arithmetic number, because the mean of its divisors is an integer number (359209690224).

Almost surely, 2^{2001311131209} is an apocalyptic number.

It is an amenable number.

2001311131209 is a deficient number, since it is larger than the sum of its proper divisors (872366390583).

2001311131209 is a wasteful number, since it uses less digits than its factorization.

2001311131209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51315670047.

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 2001311131209 in words is "two trillion, one billion, three hundred eleven million, one hundred thirty-one thousand, two hundred nine".