91031343332 has 6 divisors (see below), whose sum is σ = 159304850838. Its totient is φ = 45515671664.

The previous prime is 91031343281. The next prime is 91031343341. The reversal of 91031343332 is 23334313019.

It can be written as a sum of positive squares in only one way, i.e., 60429438976 + 30601904356 = 245824^2 + 174934^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11378917913 + ... + 11378917920.

It is an arithmetic number, because the mean of its divisors is an integer number (26550808473).

Almost surely, 2^91031343332 is an apocalyptic number.

It is an amenable number.

91031343332 is a deficient number, since it is larger than the sum of its proper divisors (68273507506).

91031343332 is a wasteful number, since it uses less digits than its factorization.

91031343332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22757835837 (or 22757835835 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 32.

The spelling of 91031343332 in words is "ninety-one billion, thirty-one million, three hundred forty-three thousand, three hundred thirty-two".