11720903 has 2 divisors, whose sum is σ = 11720904. Its totient is φ = 11720902.

The previous prime is 11720899. The next prime is 11720977. The reversal of 11720903 is 30902711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11720903 - 2² = 11720899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11720603) 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, 5860451 + 5860452.

It is an arithmetic number, because the mean of its divisors is an integer number (5860452).

Almost surely, 2^11720903 is an apocalyptic number.

11720903 is a deficient number, since it is larger than the sum of its proper divisors (1).

11720903 is an equidigital number, since it uses as much as digits as its factorization.

11720903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 11720903 is about 3423.5804357427. The cubic root of 11720903 is about 227.1539835123.

The spelling of 11720903 in words is "eleven million, seven hundred twenty thousand, nine hundred three".