2231133131 has 4 divisors (see below), whose sum is σ = 2283019992. Its totient is φ = 2179246272.

The previous prime is 2231133119. The next prime is 2231133137. The reversal of 2231133131 is 1313311322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313311322 = 2 ⋅656655661.

It is a cyclic number.

It is not a de Polignac number, because 2231133131 - 2¹⁰ = 2231132107 is a prime.

It is a super-3 number, since 3×2231133131³ (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 (2231133137) 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 3 ways as a sum of consecutive naturals, for example, 25943366 + ... + 25943451.

It is an arithmetic number, because the mean of its divisors is an integer number (570754998).

Almost surely, 2^2231133131 is an apocalyptic number.

2231133131 is a deficient number, since it is larger than the sum of its proper divisors (51886861).

2231133131 is an equidigital number, since it uses as much as digits as its factorization.

2231133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51886860.

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

The square root of 2231133131 is about 47234.8719803494. The cubic root of 2231133131 is about 1306.6978055611.

Adding to 2231133131 its reverse (1313311322), we get a palindrome (3544444453).

The spelling of 2231133131 in words is "two billion, two hundred thirty-one million, one hundred thirty-three thousand, one hundred thirty-one".