1311332137 has 2 divisors, whose sum is σ = 1311332138. Its totient is φ = 1311332136.

The previous prime is 1311332129. The next prime is 1311332159. The reversal of 1311332137 is 7312331131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795860521 + 515471616 = 28211^2 + 22704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311332137 - 2³ = 1311332129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311332167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655666068 + 655666069.

It is an arithmetic number, because the mean of its divisors is an integer number (655666069).

Almost surely, 2^1311332137 is an apocalyptic number.

It is an amenable number.

1311332137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311332137 is an equidigital number, since it uses as much as digits as its factorization.

1311332137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 25.

The square root of 1311332137 is about 36212.3202377312. The cubic root of 1311332137 is about 1094.5549471227.

Adding to 1311332137 its reverse (7312331131), we get a palindrome (8623663268).

The spelling of 1311332137 in words is "one billion, three hundred eleven million, three hundred thirty-two thousand, one hundred thirty-seven".