320420101 has 4 divisors (see below), whose sum is σ = 331469100. Its totient is φ = 309371104.

The previous prime is 320420099. The next prime is 320420117. The reversal of 320420101 is 101024023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264843076 + 55577025 = 16274^2 + 7455^2 .

It is a cyclic number.

It is not a de Polignac number, because 320420101 - 2¹ = 320420099 is a prime.

It is a super-2 number, since 2×320420101² = 205338082249700402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320450101) 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, 5524456 + ... + 5524513.

It is an arithmetic number, because the mean of its divisors is an integer number (82867275).

Almost surely, 2^320420101 is an apocalyptic number.

It is an amenable number.

320420101 is a deficient number, since it is larger than the sum of its proper divisors (11048999).

320420101 is a wasteful number, since it uses less digits than its factorization.

320420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11048998.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 320420101 is about 17900.2821486143. The cubic root of 320420101 is about 684.2895655353.

Adding to 320420101 its reverse (101024023), we get a palindrome (421444124).

The spelling of 320420101 in words is "three hundred twenty million, four hundred twenty thousand, one hundred one".