1143422231 has 4 divisors (see below), whose sum is σ = 1306768272. Its totient is φ = 980076192.

The previous prime is 1143422213. The next prime is 1143422263. The reversal of 1143422231 is 1322243411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143422231 - 2⁶ = 1143422167 is a prime.

It is a super-2 number, since 2×1143422231² = 2614828796690034722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143422197 and 1143422206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143422531) 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, 81673010 + ... + 81673023.

It is an arithmetic number, because the mean of its divisors is an integer number (326692068).

Almost surely, 2^1143422231 is an apocalyptic number.

1143422231 is a deficient number, since it is larger than the sum of its proper divisors (163346041).

1143422231 is an equidigital number, since it uses as much as digits as its factorization.

1143422231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163346040.

The product of its digits is 1152, while the sum is 23.

The square root of 1143422231 is about 33814.5269226112. The cubic root of 1143422231 is about 1045.6882079450.

Adding to 1143422231 its reverse (1322243411), we get a palindrome (2465665642).

The spelling of 1143422231 in words is "one billion, one hundred forty-three million, four hundred twenty-two thousand, two hundred thirty-one".