2012231131 has 4 divisors (see below), whose sum is σ = 2013026200. Its totient is φ = 2011436064.

The previous prime is 2012231083. The next prime is 2012231141. The reversal of 2012231131 is 1311322102.

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 2012231131 - 2⁷ = 2012231003 is a prime.

It is a super-2 number, since 2×2012231131² = 8098148249131078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012231141) 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, 393726 + ... + 398803.

It is an arithmetic number, because the mean of its divisors is an integer number (503256550).

Almost surely, 2^2012231131 is an apocalyptic number.

2012231131 is a deficient number, since it is larger than the sum of its proper divisors (795069).

2012231131 is an equidigital number, since it uses as much as digits as its factorization.

2012231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795068.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2012231131 is about 44857.8993155052. The cubic root of 2012231131 is about 1262.4842084879.

Adding to 2012231131 its reverse (1311322102), we get a palindrome (3323553233).

The spelling of 2012231131 in words is "two billion, twelve million, two hundred thirty-one thousand, one hundred thirty-one".