1311132239 has 2 divisors, whose sum is σ = 1311132240. Its totient is φ = 1311132238.

The previous prime is 1311132211. The next prime is 1311132287. The reversal of 1311132239 is 9322311131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311132239 - 2¹⁶ = 1311066703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311132289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655566119 + 655566120.

It is an arithmetic number, because the mean of its divisors is an integer number (655566120).

Almost surely, 2^1311132239 is an apocalyptic number.

1311132239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311132239 is an equidigital number, since it uses as much as digits as its factorization.

1311132239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 1311132239 is about 36209.5600497990. The cubic root of 1311132239 is about 1094.4993267203.

The spelling of 1311132239 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred thirty-nine".