91322223 has 8 divisors (see below), whose sum is σ = 122295600. Its totient is φ = 60615168.

The previous prime is 91322221. The next prime is 91322251. The reversal of 91322223 is 32222319.

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

It is not a de Polignac number, because 91322223 - 2¹ = 91322221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91322193 and 91322202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91322221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65778 + ... + 67151.

It is an arithmetic number, because the mean of its divisors is an integer number (15286950).

Almost surely, 2^91322223 is an apocalyptic number.

91322223 is a deficient number, since it is larger than the sum of its proper divisors (30973377).

91322223 is a wasteful number, since it uses less digits than its factorization.

91322223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133161.

The product of its digits is 1296, while the sum is 24.

The square root of 91322223 is about 9556.2661641459. The cubic root of 91322223 is about 450.3244129823.

The spelling of 91322223 in words is "ninety-one million, three hundred twenty-two thousand, two hundred twenty-three".