11731913 has 2 divisors, whose sum is σ = 11731914. Its totient is φ = 11731912.

The previous prime is 11731883. The next prime is 11731927. The reversal of 11731913 is 31913711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10936249 + 795664 = 3307^2 + 892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11731913 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 (11731933) 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, 5865956 + 5865957.

It is an arithmetic number, because the mean of its divisors is an integer number (5865957).

Almost surely, 2^11731913 is an apocalyptic number.

It is an amenable number.

11731913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731913 is an equidigital number, since it uses as much as digits as its factorization.

11731913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567, while the sum is 26.

The square root of 11731913 is about 3425.1880240361. The cubic root of 11731913 is about 227.2250867562.

The spelling of 11731913 in words is "eleven million, seven hundred thirty-one thousand, nine hundred thirteen".