1155321383 has 2 divisors, whose sum is σ = 1155321384. Its totient is φ = 1155321382.

The previous prime is 1155321347. The next prime is 1155321403. The reversal of 1155321383 is 3831235511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155321383 - 2¹⁴ = 1155304999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155321283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577660691 + 577660692.

It is an arithmetic number, because the mean of its divisors is an integer number (577660692).

Almost surely, 2^1155321383 is an apocalyptic number.

1155321383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155321383 is an equidigital number, since it uses as much as digits as its factorization.

1155321383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 1155321383 is about 33990.0188731928. The cubic root of 1155321383 is about 1049.3030546576.

Adding to 1155321383 its reverse (3831235511), we get a palindrome (4986556894).

The spelling of 1155321383 in words is "one billion, one hundred fifty-five million, three hundred twenty-one thousand, three hundred eighty-three".