2231031131 has 8 divisors (see below), whose sum is σ = 2597858784. Its totient is φ = 1876230720.

The previous prime is 2231031097. The next prime is 2231031139. The reversal of 2231031131 is 1311301322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2231031131 - 2¹⁸ = 2230768987 is a prime.

It is a super-3 number, since 3×2231031131³ (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 (2231031139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3006410 + ... + 3007151.

It is an arithmetic number, because the mean of its divisors is an integer number (324732348).

Almost surely, 2^2231031131 is an apocalyptic number.

2231031131 is a deficient number, since it is larger than the sum of its proper divisors (366827653).

2231031131 is an equidigital number, since it uses as much as digits as its factorization.

2231031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013621.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2231031131 is about 47233.7922572389. The cubic root of 2231031131 is about 1306.6778926291.

Adding to 2231031131 its reverse (1311301322), we get a palindrome (3542332453).

The spelling of 2231031131 in words is "two billion, two hundred thirty-one million, thirty-one thousand, one hundred thirty-one".