1264313431217 has 2 divisors, whose sum is σ = 1264313431218. Its totient is φ = 1264313431216.

The previous prime is 1264313431207. The next prime is 1264313431231. The reversal of 1264313431217 is 7121343134621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252807865521 + 11505565696 = 1119289^2 + 107264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264313431217 - 2²⁸ = 1264044995761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264313431207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632156715608 + 632156715609.

It is an arithmetic number, because the mean of its divisors is an integer number (632156715609).

Almost surely, 2^{1264313431217} is an apocalyptic number.

It is an amenable number.

1264313431217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264313431217 is an equidigital number, since it uses as much as digits as its factorization.

1264313431217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

Adding to 1264313431217 its reverse (7121343134621), we get a palindrome (8385656565838).

The spelling of 1264313431217 in words is "one trillion, two hundred sixty-four billion, three hundred thirteen million, four hundred thirty-one thousand, two hundred seventeen".