320231540166 has 32 divisors (see below), whose sum is σ = 668378511360. Its totient is φ = 102092236224.

The previous prime is 320231540147. The next prime is 320231540201. The reversal of 320231540166 is 661045132023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275786 + ... + 1506018.

It is an arithmetic number, because the mean of its divisors is an integer number (20886828480).

Almost surely, 2^320231540166 is an apocalyptic number.

320231540166 is an abundant number, since it is smaller than the sum of its proper divisors (348146971194).

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

320231540166 is a wasteful number, since it uses less digits than its factorization.

320231540166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240340.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 320231540166 its reverse (661045132023), we get a palindrome (981276672189).

The spelling of 320231540166 in words is "three hundred twenty billion, two hundred thirty-one million, five hundred forty thousand, one hundred sixty-six".