320231020 has 24 divisors (see below), whose sum is σ = 673163568. Its totient is φ = 127963200.

The previous prime is 320231011. The next prime is 320231027. The reversal of 320231020 is 20132023.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (320231027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13675 + ... + 28765.

It is an arithmetic number, because the mean of its divisors is an integer number (28048482).

Almost surely, 2^320231020 is an apocalyptic number.

It is an amenable number.

320231020 is an abundant number, since it is smaller than the sum of its proper divisors (352932548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320231020 is a wasteful number, since it uses less digits than its factorization.

320231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320231020 is about 17894.9998602962. Note that the first 3 decimals coincide. The cubic root of 320231020 is about 684.1549385111.

Adding to 320231020 its reverse (20132023), we get a palindrome (340363043).

The spelling of 320231020 in words is "three hundred twenty million, two hundred thirty-one thousand, twenty".