1201311017 has 2 divisors, whose sum is σ = 1201311018. Its totient is φ = 1201311016.

The previous prime is 1201310989. The next prime is 1201311019. The reversal of 1201311017 is 7101131021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198475161 + 2835856 = 34619^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201311017 - 2³⁰ = 127569193 is a prime.

Together with 1201311019, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201310986 and 1201311004.

It is not a weakly prime, because it can be changed into another prime (1201311019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600655508 + 600655509.

It is an arithmetic number, because the mean of its divisors is an integer number (600655509).

Almost surely, 2^1201311017 is an apocalyptic number.

It is an amenable number.

1201311017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201311017 is an equidigital number, since it uses as much as digits as its factorization.

1201311017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 1201311017 is about 34659.9338862612. The cubic root of 1201311017 is about 1063.0454181845.

Adding to 1201311017 its reverse (7101131021), we get a palindrome (8302442038).

The spelling of 1201311017 in words is "one billion, two hundred one million, three hundred eleven thousand, seventeen".