11011331923 has 2 divisors, whose sum is σ = 11011331924. Its totient is φ = 11011331922.

The previous prime is 11011331921. The next prime is 11011332047. The reversal of 11011331923 is 32913311011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11011331923 - 2¹ = 11011331921 is a prime.

Together with 11011331921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11011331921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505665961 + 5505665962.

It is an arithmetic number, because the mean of its divisors is an integer number (5505665962).

Almost surely, 2^11011331923 is an apocalyptic number.

11011331923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011331923 is an equidigital number, since it uses as much as digits as its factorization.

11011331923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

Adding to 11011331923 its reverse (32913311011), we get a palindrome (43924642934).

The spelling of 11011331923 in words is "eleven billion, eleven million, three hundred thirty-one thousand, nine hundred twenty-three".