11317381 has 2 divisors, whose sum is σ = 11317382. Its totient is φ = 11317380.

The previous prime is 11317379. The next prime is 11317421. The reversal of 11317381 is 18371311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 4268356 = 2655^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 11317381 - 2¹ = 11317379 is a prime.

It is a super-2 number, since 2×11317381² = 256166225398322, which contains 22 as substring.

Together with 11317379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11317181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5658690 + 5658691.

It is an arithmetic number, because the mean of its divisors is an integer number (5658691).

Almost surely, 2^11317381 is an apocalyptic number.

It is an amenable number.

11317381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11317381 is an equidigital number, since it uses as much as digits as its factorization.

11317381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 11317381 is about 3364.1315372619. The cubic root of 11317381 is about 224.5166975840.

Adding to 11317381 its reverse (18371311), we get a palindrome (29688692).

The spelling of 11317381 in words is "eleven million, three hundred seventeen thousand, three hundred eighty-one".