1155231323 has 2 divisors, whose sum is σ = 1155231324. Its totient is φ = 1155231322.

The previous prime is 1155231313. The next prime is 1155231347. The reversal of 1155231323 is 3231325511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155231323 - 2⁴ = 1155231307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155231292 and 1155231301.

It is not a weakly prime, because it can be changed into another prime (1155231313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577615661 + 577615662.

It is an arithmetic number, because the mean of its divisors is an integer number (577615662).

Almost surely, 2^1155231323 is an apocalyptic number.

1155231323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155231323 is an equidigital number, since it uses as much as digits as its factorization.

1155231323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 1155231323 is about 33988.6940466974. The cubic root of 1155231323 is about 1049.2757887413.

Adding to 1155231323 its reverse (3231325511), we get a palindrome (4386556834).

It can be divided in two parts, 11552 and 31323, that added together give a cube (42875 = 35³).

The spelling of 1155231323 in words is "one billion, one hundred fifty-five million, two hundred thirty-one thousand, three hundred twenty-three".