1117131361 has 2 divisors, whose sum is σ = 1117131362. Its totient is φ = 1117131360.

The previous prime is 1117131349. The next prime is 1117131373. The reversal of 1117131361 is 1631317111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1117131349) and next prime (1117131373).

It can be written as a sum of positive squares in only one way, i.e., 891380736 + 225750625 = 29856^2 + 15025^2 .

It is an emirp because it is prime and its reverse (1631317111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1117131361 - 2⁵ = 1117131329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1117138361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558565680 + 558565681.

It is an arithmetic number, because the mean of its divisors is an integer number (558565681).

Almost surely, 2^1117131361 is an apocalyptic number.

It is an amenable number.

1117131361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117131361 is an equidigital number, since it uses as much as digits as its factorization.

1117131361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 25.

The square root of 1117131361 is about 33423.5150904270. The cubic root of 1117131361 is about 1037.6114318983.

Adding to 1117131361 its reverse (1631317111), we get a palindrome (2748448472).

The spelling of 1117131361 in words is "one billion, one hundred seventeen million, one hundred thirty-one thousand, three hundred sixty-one".