2001113131 has 2 divisors, whose sum is σ = 2001113132. Its totient is φ = 2001113130.

The previous prime is 2001113111. The next prime is 2001113141. The reversal of 2001113131 is 1313111002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001113131 - 2²⁷ = 1866895403 is a prime.

It is a super-2 number, since 2×2001113131² = 8008907526121246322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001113111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000556565 + 1000556566.

It is an arithmetic number, because the mean of its divisors is an integer number (1000556566).

Almost surely, 2^2001113131 is an apocalyptic number.

2001113131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001113131 is an equidigital number, since it uses as much as digits as its factorization.

2001113131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 2001113131 is about 44733.8030017570. The cubic root of 2001113131 is about 1260.1547494069.

Adding to 2001113131 its reverse (1313111002), we get a palindrome (3314224133).

The spelling of 2001113131 in words is "two billion, one million, one hundred thirteen thousand, one hundred thirty-one".