91301123 has 2 divisors, whose sum is σ = 91301124. Its totient is φ = 91301122.

The previous prime is 91301117. The next prime is 91301129. The reversal of 91301123 is 32110319.

It is a balanced prime because it is at equal distance from previous prime (91301117) and next prime (91301129).

It is an emirp because it is prime and its reverse (32110319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91301123 - 2⁶ = 91301059 is a prime.

It is a super-2 number, since 2×91301123² = 16671790122122258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 91301095 and 91301104.

It is not a weakly prime, because it can be changed into another prime (91301129) 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, 45650561 + 45650562.

It is an arithmetic number, because the mean of its divisors is an integer number (45650562).

Almost surely, 2^91301123 is an apocalyptic number.

91301123 is a deficient number, since it is larger than the sum of its proper divisors (1).

91301123 is an equidigital number, since it uses as much as digits as its factorization.

91301123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 91301123 is about 9555.1621127012. The cubic root of 91301123 is about 450.2897278250.

The spelling of 91301123 in words is "ninety-one million, three hundred one thousand, one hundred twenty-three".