91322312 has 8 divisors (see below), whose sum is σ = 171229350. Its totient is φ = 45661152.

The previous prime is 91322263. The next prime is 91322333. The reversal of 91322312 is 21322319.

It can be written as a sum of positive squares in only one way, i.e., 78605956 + 12716356 = 8866^2 + 3566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×91322312³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707637 + ... + 5707652.

Almost surely, 2^91322312 is an apocalyptic number.

It is an amenable number.

91322312 is a deficient number, since it is larger than the sum of its proper divisors (79907038).

91322312 is a wasteful number, since it uses less digits than its factorization.

91322312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11415295 (or 11415291 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 91322312 is about 9556.2708207752. The cubic root of 91322312 is about 450.3245592733.

The spelling of 91322312 in words is "ninety-one million, three hundred twenty-two thousand, three hundred twelve".