1143305473 has 2 divisors, whose sum is σ = 1143305474. Its totient is φ = 1143305472.

The previous prime is 1143305431. The next prime is 1143305491. The reversal of 1143305473 is 3745033411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731540209 + 411765264 = 27047^2 + 20292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143305473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143315473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571652736 + 571652737.

It is an arithmetic number, because the mean of its divisors is an integer number (571652737).

Almost surely, 2^1143305473 is an apocalyptic number.

It is an amenable number.

1143305473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143305473 is an equidigital number, since it uses as much as digits as its factorization.

1143305473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 1143305473 is about 33812.8004311977. The cubic root of 1143305473 is about 1045.6526140304.

Adding to 1143305473 its reverse (3745033411), we get a palindrome (4888338884).

The spelling of 1143305473 in words is "one billion, one hundred forty-three million, three hundred five thousand, four hundred seventy-three".