1311058247 has 2 divisors, whose sum is σ = 1311058248. Its totient is φ = 1311058246.

The previous prime is 1311058237. The next prime is 1311058321. The reversal of 1311058247 is 7428501131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311058247 - 2²⁶ = 1243949383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311058237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655529123 + 655529124.

It is an arithmetic number, because the mean of its divisors is an integer number (655529124).

Almost surely, 2^1311058247 is an apocalyptic number.

1311058247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311058247 is an equidigital number, since it uses as much as digits as its factorization.

1311058247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1311058247 is about 36208.5383162591. The cubic root of 1311058247 is about 1094.4787374628.

Adding to 1311058247 its reverse (7428501131), we get a palindrome (8739559378).

The spelling of 1311058247 in words is "one billion, three hundred eleven million, fifty-eight thousand, two hundred forty-seven".