11931113 has 2 divisors, whose sum is σ = 11931114. Its totient is φ = 11931112.

The previous prime is 11931079. The next prime is 11931121. The reversal of 11931113 is 31113911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10004569 + 1926544 = 3163^2 + 1388^2 .

It is an emirp because it is prime and its reverse (31113911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11931113 - 2⁸ = 11930857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11931163) 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, 5965556 + 5965557.

It is an arithmetic number, because the mean of its divisors is an integer number (5965557).

Almost surely, 2^11931113 is an apocalyptic number.

It is an amenable number.

11931113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11931113 is an equidigital number, since it uses as much as digits as its factorization.

11931113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81, while the sum is 20.

The square root of 11931113 is about 3454.1443224046. The cubic root of 11931113 is about 228.5039190322.

The spelling of 11931113 in words is "eleven million, nine hundred thirty-one thousand, one hundred thirteen".