1131444073 has 2 divisors, whose sum is σ = 1131444074. Its totient is φ = 1131444072.

The previous prime is 1131444071. The next prime is 1131444109. The reversal of 1131444073 is 3704441311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101708864 + 29735209 = 33192^2 + 5453^2 .

It is an emirp because it is prime and its reverse (3704441311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131444073 - 2¹ = 1131444071 is a prime.

Together with 1131444071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1131444071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565722036 + 565722037.

It is an arithmetic number, because the mean of its divisors is an integer number (565722037).

Almost surely, 2^1131444073 is an apocalyptic number.

It is an amenable number.

1131444073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131444073 is an equidigital number, since it uses as much as digits as its factorization.

1131444073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1131444073 is about 33636.9450604540. The cubic root of 1131444073 is about 1042.0239411168.

Adding to 1131444073 its reverse (3704441311), we get a palindrome (4835885384).

The spelling of 1131444073 in words is "one billion, one hundred thirty-one million, four hundred forty-four thousand, seventy-three".