1311232163 has 2 divisors, whose sum is σ = 1311232164. Its totient is φ = 1311232162.

The previous prime is 1311232121. The next prime is 1311232171. The reversal of 1311232163 is 3612321131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311232163 - 2¹⁴ = 1311215779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311238163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655616081 + 655616082.

It is an arithmetic number, because the mean of its divisors is an integer number (655616082).

Almost surely, 2^1311232163 is an apocalyptic number.

1311232163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311232163 is an equidigital number, since it uses as much as digits as its factorization.

1311232163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 23.

The square root of 1311232163 is about 36210.9398248651. The cubic root of 1311232163 is about 1094.5271306720.

Adding to 1311232163 its reverse (3612321131), we get a palindrome (4923553294).

The spelling of 1311232163 in words is "one billion, three hundred eleven million, two hundred thirty-two thousand, one hundred sixty-three".