11319961 has 2 divisors, whose sum is σ = 11319962. Its totient is φ = 11319960.

The previous prime is 11319949. The next prime is 11319967. The reversal of 11319961 is 16991311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8886361 + 2433600 = 2981^2 + 1560^2 .

It is an emirp because it is prime and its reverse (16991311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11319961 - 2¹⁷ = 11188889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11319967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5659980 + 5659981.

It is an arithmetic number, because the mean of its divisors is an integer number (5659981).

Almost surely, 2^11319961 is an apocalyptic number.

It is an amenable number.

11319961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11319961 is an equidigital number, since it uses as much as digits as its factorization.

11319961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 31.

The square root of 11319961 is about 3364.5149724737. The cubic root of 11319961 is about 224.5337571571.

The spelling of 11319961 in words is "eleven million, three hundred nineteen thousand, nine hundred sixty-one".