97144321 has 4 divisors (see below), whose sum is σ = 102257200. Its totient is φ = 92031444.

The previous prime is 97144309. The next prime is 97144331. The reversal of 97144321 is 12344179.

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.

It is a cyclic number.

It is not a de Polignac number, because 97144321 - 2⁷ = 97144193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97144331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556411 + ... + 2556448.

It is an arithmetic number, because the mean of its divisors is an integer number (25564300).

Almost surely, 2^97144321 is an apocalyptic number.

It is an amenable number.

97144321 is a deficient number, since it is larger than the sum of its proper divisors (5112879).

97144321 is a wasteful number, since it uses less digits than its factorization.

97144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112878.

The product of its digits is 6048, while the sum is 31.

The square root of 97144321 is about 9856.1818672344. The cubic root of 97144321 is about 459.6978497808.

The spelling of 97144321 in words is "ninety-seven million, one hundred forty-four thousand, three hundred twenty-one".