1310811263 has 2 divisors, whose sum is σ = 1310811264. Its totient is φ = 1310811262.

The previous prime is 1310811251. The next prime is 1310811289. The reversal of 1310811263 is 3621180131.

It is an a-pointer prime, because the next prime (1310811289) can be obtained adding 1310811263 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1310811263 - 2¹² = 1310807167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310811233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655405631 + 655405632.

It is an arithmetic number, because the mean of its divisors is an integer number (655405632).

Almost surely, 2^1310811263 is an apocalyptic number.

1310811263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310811263 is an equidigital number, since it uses as much as digits as its factorization.

1310811263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1310811263 is about 36205.1275788389. The cubic root of 1310811263 is about 1094.4100052730.

Adding to 1310811263 its reverse (3621180131), we get a palindrome (4931991394).

The spelling of 1310811263 in words is "one billion, three hundred ten million, eight hundred eleven thousand, two hundred sixty-three".