2231131131 has 12 divisors (see below), whose sum is σ = 3225366352. Its totient is φ = 1486210896.

The previous prime is 2231131103. The next prime is 2231131139. The reversal of 2231131131 is 1311311322.

It is not a de Polignac number, because 2231131131 - 2³⁰ = 1157389307 is a prime.

It is a super-3 number, since 3×2231131131³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231131139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89071 + ... + 111336.

Almost surely, 2^2231131131 is an apocalyptic number.

2231131131 is a deficient number, since it is larger than the sum of its proper divisors (994235221).

2231131131 is a wasteful number, since it uses less digits than its factorization.

2231131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201650 (or 201647 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2231131131 is about 47234.8508095453. The cubic root of 2231131131 is about 1306.6974151173.

Adding to 2231131131 its reverse (1311311322), we get a palindrome (3542442453).

The spelling of 2231131131 in words is "two billion, two hundred thirty-one million, one hundred thirty-one thousand, one hundred thirty-one".