91126131 has 8 divisors (see below), whose sum is σ = 123493584. Its totient is φ = 59754720.

The previous prime is 91126127. The next prime is 91126151. The reversal of 91126131 is 13162119.

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

It is not a de Polignac number, because 91126131 - 2² = 91126127 is a prime.

It is a super-2 number, since 2×91126131² = 16607943502058322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91126111) 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, 248796 + ... + 249161.

It is an arithmetic number, because the mean of its divisors is an integer number (15436698).

Almost surely, 2^91126131 is an apocalyptic number.

91126131 is a deficient number, since it is larger than the sum of its proper divisors (32367453).

91126131 is a wasteful number, since it uses less digits than its factorization.

91126131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498021.

The product of its digits is 324, while the sum is 24.

The square root of 91126131 is about 9546.0007856694. Note that the first 3 decimals coincide. The cubic root of 91126131 is about 450.0018617207.

The spelling of 91126131 in words is "ninety-one million, one hundred twenty-six thousand, one hundred thirty-one".