1311014209 has 2 divisors, whose sum is σ = 1311014210. Its totient is φ = 1311014208.

The previous prime is 1311014171. The next prime is 1311014249. The reversal of 1311014209 is 9024101131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 893711025 + 417303184 = 29895^2 + 20428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311014209 - 2¹¹ = 1311012161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311014209.

It is not a weakly prime, because it can be changed into another prime (1311014249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655507104 + 655507105.

It is an arithmetic number, because the mean of its divisors is an integer number (655507105).

Almost surely, 2^1311014209 is an apocalyptic number.

It is an amenable number.

1311014209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311014209 is an equidigital number, since it uses as much as digits as its factorization.

1311014209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1311014209 is about 36207.9301949172. The cubic root of 1311014209 is about 1094.4664829363.

The spelling of 1311014209 in words is "one billion, three hundred eleven million, fourteen thousand, two hundred nine".