91291441513231 has 8 divisors (see below), whose sum is σ = 91648584916560. Its totient is φ = 90934313023488.

The previous prime is 91291441513091. The next prime is 91291441513241. The reversal of 91291441513231 is 13231514419219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91291441513231 - 2¹³ = 91291441505039 is a prime.

It is a super-2 number, since 2×91291441513231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91291441513241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8618085 + ... + 16026673.

It is an arithmetic number, because the mean of its divisors is an integer number (11456073114570).

Almost surely, 2^{91291441513231} is an apocalyptic number.

91291441513231 is a deficient number, since it is larger than the sum of its proper divisors (357143403329).

91291441513231 is a wasteful number, since it uses less digits than its factorization.

91291441513231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7456793.

The product of its digits is 233280, while the sum is 46.

The spelling of 91291441513231 in words is "ninety-one trillion, two hundred ninety-one billion, four hundred forty-one million, five hundred thirteen thousand, two hundred thirty-one".