2013131131 has 4 divisors (see below), whose sum is σ = 2196143064. Its totient is φ = 1830119200.

The previous prime is 2013131117. The next prime is 2013131161. The reversal of 2013131131 is 1311313102.

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

It is a cyclic number.

It is not a de Polignac number, because 2013131131 - 2²⁵ = 1979576699 is a prime.

It is a super-2 number, since 2×2013131131² = 8105393901202678322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013131161) 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, 91505950 + ... + 91505971.

It is an arithmetic number, because the mean of its divisors is an integer number (549035766).

Almost surely, 2^2013131131 is an apocalyptic number.

2013131131 is a deficient number, since it is larger than the sum of its proper divisors (183011933).

2013131131 is a wasteful number, since it uses less digits than its factorization.

2013131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183011932.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2013131131 is about 44867.9298720144. The cubic root of 2013131131 is about 1262.6724019833.

Adding to 2013131131 its reverse (1311313102), we get a palindrome (3324444233).

The spelling of 2013131131 in words is "two billion, thirteen million, one hundred thirty-one thousand, one hundred thirty-one".