91001011103 has 2 divisors, whose sum is σ = 91001011104. Its totient is φ = 91001011102.

The previous prime is 91001011099. The next prime is 91001011111. The reversal of 91001011103 is 30111010019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91001011103 - 2² = 91001011099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91001011133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45500505551 + 45500505552.

It is an arithmetic number, because the mean of its divisors is an integer number (45500505552).

Almost surely, 2^91001011103 is an apocalyptic number.

91001011103 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001011103 is an equidigital number, since it uses as much as digits as its factorization.

91001011103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 17.

The spelling of 91001011103 in words is "ninety-one billion, one million, eleven thousand, one hundred three".