11317487257 has 2 divisors, whose sum is σ = 11317487258. Its totient is φ = 11317487256.

The previous prime is 11317487219. The next prime is 11317487309. The reversal of 11317487257 is 75278471311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11273980041 + 43507216 = 106179^2 + 6596^2 .

It is an emirp because it is prime and its reverse (75278471311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11317487257 is a prime.

It is a super-3 number, since 3×11317487257³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11317487057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5658743628 + 5658743629.

It is an arithmetic number, because the mean of its divisors is an integer number (5658743629).

Almost surely, 2^11317487257 is an apocalyptic number.

It is an amenable number.

11317487257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11317487257 is an equidigital number, since it uses as much as digits as its factorization.

11317487257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 46.

The spelling of 11317487257 in words is "eleven billion, three hundred seventeen million, four hundred eighty-seven thousand, two hundred fifty-seven".