320097421 has 4 divisors (see below), whose sum is σ = 365825632. Its totient is φ = 274369212.

The previous prime is 320097383. The next prime is 320097431. The reversal of 320097421 is 124790023.

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 320097421 - 2⁷ = 320097293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320097421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320097431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22864095 + ... + 22864108.

It is an arithmetic number, because the mean of its divisors is an integer number (91456408).

Almost surely, 2^320097421 is an apocalyptic number.

It is an amenable number.

320097421 is a deficient number, since it is larger than the sum of its proper divisors (45728211).

320097421 is an equidigital number, since it uses as much as digits as its factorization.

320097421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45728210.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 320097421 is about 17891.2666125124. The cubic root of 320097421 is about 684.0597831141.

The spelling of 320097421 in words is "three hundred twenty million, ninety-seven thousand, four hundred twenty-one".