2231534443 has 4 divisors (see below), whose sum is σ = 2231670888. Its totient is φ = 2231398000.

The previous prime is 2231534441. The next prime is 2231534447. The reversal of 2231534443 is 3444351322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3444351322 = 2 ⋅1722175661.

It is a cyclic number.

It is not a de Polignac number, because 2231534443 - 2¹ = 2231534441 is a prime.

It is a super-3 number, since 3×2231534443³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231534441) 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, 39721 + ... + 77722.

It is an arithmetic number, because the mean of its divisors is an integer number (557917722).

Almost surely, 2^2231534443 is an apocalyptic number.

2231534443 is a deficient number, since it is larger than the sum of its proper divisors (136445).

2231534443 is a wasteful number, since it uses less digits than its factorization.

2231534443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136444.

The product of its digits is 34560, while the sum is 31.

The square root of 2231534443 is about 47239.1198372705. The cubic root of 2231534443 is about 1306.7761457350.

Adding to 2231534443 its reverse (3444351322), we get a palindrome (5675885765).

The spelling of 2231534443 in words is "two billion, two hundred thirty-one million, five hundred thirty-four thousand, four hundred forty-three".