1311022247 has 2 divisors, whose sum is σ = 1311022248. Its totient is φ = 1311022246.

The previous prime is 1311022217. The next prime is 1311022253. The reversal of 1311022247 is 7422201131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1311022247 - 2⁸ = 1311021991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311022217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655511123 + 655511124.

It is an arithmetic number, because the mean of its divisors is an integer number (655511124).

Almost surely, 2^1311022247 is an apocalyptic number.

1311022247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311022247 is an equidigital number, since it uses as much as digits as its factorization.

1311022247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1311022247 is about 36208.0411925307. The cubic root of 1311022247 is about 1094.4687197042.

Adding to 1311022247 its reverse (7422201131), we get a palindrome (8733223378).

The spelling of 1311022247 in words is "one billion, three hundred eleven million, twenty-two thousand, two hundred forty-seven".