1143023311 has 2 divisors, whose sum is σ = 1143023312. Its totient is φ = 1143023310.

The previous prime is 1143023303. The next prime is 1143023333. The reversal of 1143023311 is 1133203411.

It is a weak prime.

It is an emirp because it is prime and its reverse (1133203411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143023311 - 2³ = 1143023303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143023411) 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, 571511655 + 571511656.

It is an arithmetic number, because the mean of its divisors is an integer number (571511656).

Almost surely, 2^1143023311 is an apocalyptic number.

1143023311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143023311 is an equidigital number, since it uses as much as digits as its factorization.

1143023311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1143023311 is about 33808.6277597894. The cubic root of 1143023311 is about 1045.5665863633.

Adding to 1143023311 its reverse (1133203411), we get a palindrome (2276226722).

The spelling of 1143023311 in words is "one billion, one hundred forty-three million, twenty-three thousand, three hundred eleven".