91423535311 has 4 divisors (see below), whose sum is σ = 91430531032. Its totient is φ = 91416539592.

The previous prime is 91423535309. The next prime is 91423535321. The reversal of 91423535311 is 11353532419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91423535311 - 2¹ = 91423535309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91423535321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3478221 + ... + 3504406.

It is an arithmetic number, because the mean of its divisors is an integer number (22857632758).

Almost surely, 2^91423535311 is an apocalyptic number.

91423535311 is a deficient number, since it is larger than the sum of its proper divisors (6995721).

91423535311 is a wasteful number, since it uses less digits than its factorization.

91423535311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995720.

The product of its digits is 48600, while the sum is 37.

It can be divided in two parts, 9142 and 3535311, that added together give a palindrome (3544453).

The spelling of 91423535311 in words is "ninety-one billion, four hundred twenty-three million, five hundred thirty-five thousand, three hundred eleven".