1143230386 has 4 divisors (see below), whose sum is σ = 1714845582. Its totient is φ = 571615192.

The previous prime is 1143230383. The next prime is 1143230441. The reversal of 1143230386 is 6830323411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6830323411 = 211 ⋅32371201.

It can be written as a sum of positive squares in only one way, i.e., 760049761 + 383180625 = 27569^2 + 19575^2 .

It is not an unprimeable number, because it can be changed into a prime (1143230383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285807595 + ... + 285807598.

Almost surely, 2^1143230386 is an apocalyptic number.

1143230386 is a deficient number, since it is larger than the sum of its proper divisors (571615196).

1143230386 is an equidigital number, since it uses as much as digits as its factorization.

1143230386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571615195.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1143230386 is about 33811.6900790244. The cubic root of 1143230386 is about 1045.6297223249.

Adding to 1143230386 its reverse (6830323411), we get a palindrome (7973553797).

The spelling of 1143230386 in words is "one billion, one hundred forty-three million, two hundred thirty thousand, three hundred eighty-six".