97323221 has 4 divisors (see below), whose sum is σ = 97759872. Its totient is φ = 96886572.

The previous prime is 97323199. The next prime is 97323223. The reversal of 97323221 is 12232379.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12232379 = 97 ⋅126107.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97323221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97323223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217991 + ... + 218436.

It is an arithmetic number, because the mean of its divisors is an integer number (24439968).

Almost surely, 2^97323221 is an apocalyptic number.

It is an amenable number.

97323221 is a deficient number, since it is larger than the sum of its proper divisors (436651).

97323221 is a wasteful number, since it uses less digits than its factorization.

97323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436650.

The product of its digits is 4536, while the sum is 29.

The square root of 97323221 is about 9865.2532151993. The cubic root of 97323221 is about 459.9798683691.

The spelling of 97323221 in words is "ninety-seven million, three hundred twenty-three thousand, two hundred twenty-one".