91324131 has 8 divisors (see below), whose sum is σ = 124597440. Its totient is φ = 59466792.

The previous prime is 91324111. The next prime is 91324151. The reversal of 91324131 is 13142319.

It is an interprime number because it is at equal distance from previous prime (91324111) and next prime (91324151).

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

It is not a de Polignac number, because 91324131 - 2⁶ = 91324067 is a prime.

It is a super-2 number, since 2×91324131² = 16680193805810322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91324111) 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 7 ways as a sum of consecutive naturals, for example, 353841 + ... + 354098.

It is an arithmetic number, because the mean of its divisors is an integer number (15574680).

Almost surely, 2^91324131 is an apocalyptic number.

91324131 is a deficient number, since it is larger than the sum of its proper divisors (33273309).

91324131 is a wasteful number, since it uses less digits than its factorization.

91324131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707985.

The product of its digits is 648, while the sum is 24.

The square root of 91324131 is about 9556.3659934098. The cubic root of 91324131 is about 450.3275491777.

The spelling of 91324131 in words is "ninety-one million, three hundred twenty-four thousand, one hundred thirty-one".