320109401 has 4 divisors (see below), whose sum is σ = 320145204. Its totient is φ = 320073600.

The previous prime is 320109389. The next prime is 320109407. The reversal of 320109401 is 104901023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 104901023 = 337 ⋅311279.

It can be written as a sum of positive squares in 2 ways, for example, as 210279001 + 109830400 = 14501^2 + 10480^2 .

It is a cyclic number.

It is not a de Polignac number, because 320109401 - 2¹⁰ = 320108377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320109407) 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, 8081 + ... + 26561.

It is an arithmetic number, because the mean of its divisors is an integer number (80036301).

Almost surely, 2^320109401 is an apocalyptic number.

It is an amenable number.

320109401 is a deficient number, since it is larger than the sum of its proper divisors (35803).

320109401 is a wasteful number, since it uses less digits than its factorization.

320109401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35802.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 320109401 is about 17891.6014096000. The cubic root of 320109401 is about 684.0683169056.

The spelling of 320109401 in words is "three hundred twenty million, one hundred nine thousand, four hundred one".