1143430229 has 2 divisors, whose sum is σ = 1143430230. Its totient is φ = 1143430228.

The previous prime is 1143430219. The next prime is 1143430273. The reversal of 1143430229 is 9220343411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717007729 + 426422500 = 26777^2 + 20650^2 .

It is an emirp because it is prime and its reverse (9220343411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143430229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143430219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571715114 + 571715115.

It is an arithmetic number, because the mean of its divisors is an integer number (571715115).

Almost surely, 2^1143430229 is an apocalyptic number.

It is an amenable number.

1143430229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143430229 is an equidigital number, since it uses as much as digits as its factorization.

1143430229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1143430229 is about 33814.6451851857. The cubic root of 1143430229 is about 1045.6906460630.

It can be divided in two parts, 114 and 3430229, that added together give a palindrome (3430343).

The spelling of 1143430229 in words is "one billion, one hundred forty-three million, four hundred thirty thousand, two hundred twenty-nine".