1311234017 has 2 divisors, whose sum is σ = 1311234018. Its totient is φ = 1311234016.

The previous prime is 1311233977. The next prime is 1311234037. The reversal of 1311234017 is 7104321131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164242641 + 146991376 = 34121^2 + 12124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311234017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311233983 and 1311234001.

It is not a weakly prime, because it can be changed into another prime (1311234037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655617008 + 655617009.

It is an arithmetic number, because the mean of its divisors is an integer number (655617009).

Almost surely, 2^1311234017 is an apocalyptic number.

It is an amenable number.

1311234017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311234017 is an equidigital number, since it uses as much as digits as its factorization.

1311234017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1311234017 is about 36210.9654248544. The cubic root of 1311234017 is about 1094.5276465360.

Adding to 1311234017 its reverse (7104321131), we get a palindrome (8415555148).

The spelling of 1311234017 in words is "one billion, three hundred eleven million, two hundred thirty-four thousand, seventeen".