91131682 has 8 divisors (see below), whose sum is σ = 138938652. Its totient is φ = 44818800.

The previous prime is 91131673. The next prime is 91131697. The reversal of 91131682 is 28613119.

It can be written as a sum of positive squares in 2 ways, for example, as 87815641 + 3316041 = 9371^2 + 1821^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373369 + ... + 373612.

Almost surely, 2^91131682 is an apocalyptic number.

91131682 is a deficient number, since it is larger than the sum of its proper divisors (47806970).

91131682 is a wasteful number, since it uses less digits than its factorization.

91131682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747044.

The product of its digits is 2592, while the sum is 31.

The square root of 91131682 is about 9546.2915312701. The cubic root of 91131682 is about 450.0109989081.

The spelling of 91131682 in words is "ninety-one million, one hundred thirty-one thousand, six hundred eighty-two".