91011332 has 6 divisors (see below), whose sum is σ = 159269838. Its totient is φ = 45505664.

The previous prime is 91011313. The next prime is 91011341. The reversal of 91011332 is 23311019.

It can be written as a sum of positive squares in only one way, i.e., 63616576 + 27394756 = 7976^2 + 5234^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11376413 + ... + 11376420.

It is an arithmetic number, because the mean of its divisors is an integer number (26544973).

Almost surely, 2^91011332 is an apocalyptic number.

It is an amenable number.

91011332 is a deficient number, since it is larger than the sum of its proper divisors (68258506).

91011332 is a wasteful number, since it uses less digits than its factorization.

91011332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22752837 (or 22752835 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 91011332 is about 9539.9859538681. The cubic root of 91011332 is about 449.8128143286.

The spelling of 91011332 in words is "ninety-one million, eleven thousand, three hundred thirty-two".