320120413 has 4 divisors (see below), whose sum is σ = 320416000. Its totient is φ = 319824828.

The previous prime is 320120399. The next prime is 320120429. The reversal of 320120413 is 314021023.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-320120413 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 (320120443) 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, 146163 + ... + 148336.

It is an arithmetic number, because the mean of its divisors is an integer number (80104000).

Almost surely, 2^320120413 is an apocalyptic number.

It is an amenable number.

320120413 is a deficient number, since it is larger than the sum of its proper divisors (295587).

320120413 is a wasteful number, since it uses less digits than its factorization.

320120413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295586.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320120413 is about 17891.9091491098. The cubic root of 320120413 is about 684.0761609676.

Adding to 320120413 its reverse (314021023), we get a palindrome (634141436).

The spelling of 320120413 in words is "three hundred twenty million, one hundred twenty thousand, four hundred thirteen".