2131133231 has 16 divisors (see below), whose sum is σ = 2196004608. Its totient is φ = 2067508800.

The previous prime is 2131133203. The next prime is 2131133261. The reversal of 2131133231 is 1323311312.

It is a cyclic number.

It is not a de Polignac number, because 2131133231 - 2¹⁴ = 2131116847 is a prime.

It is a super-2 number, since 2×2131133231² = 9083457696544998722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131133261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237451 + ... + 1239171.

It is an arithmetic number, because the mean of its divisors is an integer number (137250288).

Almost surely, 2^2131133231 is an apocalyptic number.

2131133231 is a deficient number, since it is larger than the sum of its proper divisors (64871377).

2131133231 is a wasteful number, since it uses less digits than its factorization.

2131133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its digits is 324, while the sum is 20.

The square root of 2131133231 is about 46164.1985850507. The cubic root of 2131133231 is about 1286.8764907063.

Adding to 2131133231 its reverse (1323311312), we get a palindrome (3454444543).

The spelling of 2131133231 in words is "two billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred thirty-one".