2011320031 has 32 divisors (see below), whose sum is σ = 2673423360. Its totient is φ = 1470306816.

The previous prime is 2011320029. The next prime is 2011320041. The reversal of 2011320031 is 1300231102.

It is a cyclic number.

It is not a de Polignac number, because 2011320031 - 2¹ = 2011320029 is a prime.

It is a super-2 number, since 2×2011320031² = 8090816534203681922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011319993 and 2011320020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011320041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32665 + ... + 71341.

It is an arithmetic number, because the mean of its divisors is an integer number (83544480).

Almost surely, 2^2011320031 is an apocalyptic number.

2011320031 is a deficient number, since it is larger than the sum of its proper divisors (662103329).

2011320031 is a wasteful number, since it uses less digits than its factorization.

2011320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38743.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2011320031 is about 44847.7427637111. The cubic root of 2011320031 is about 1262.2936367734.

Adding to 2011320031 its reverse (1300231102), we get a palindrome (3311551133).

The spelling of 2011320031 in words is "two billion, eleven million, three hundred twenty thousand, thirty-one".