11291923 has 2 divisors, whose sum is σ = 11291924. Its totient is φ = 11291922.

The previous prime is 11291921. The next prime is 11291939. The reversal of 11291923 is 32919211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11291923 - 2¹ = 11291921 is a prime.

Together with 11291921, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11291891 and 11291900.

It is not a weakly prime, because it can be changed into another prime (11291921) 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, 5645961 + 5645962.

It is an arithmetic number, because the mean of its divisors is an integer number (5645962).

Almost surely, 2^11291923 is an apocalyptic number.

11291923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11291923 is an equidigital number, since it uses as much as digits as its factorization.

11291923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 28.

The square root of 11291923 is about 3360.3456667432. The cubic root of 11291923 is about 224.3482240584.

The spelling of 11291923 in words is "eleven million, two hundred ninety-one thousand, nine hundred twenty-three".