320215031140 has 48 divisors (see below), whose sum is σ = 688392815040. Its totient is φ = 125079799680.

The previous prime is 320215031119. The next prime is 320215031159. The reversal of 320215031140 is 41130512023.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 774562 + ... + 1113721.

It is an arithmetic number, because the mean of its divisors is an integer number (14341516980).

Almost surely, 2^320215031140 is an apocalyptic number.

It is an amenable number.

320215031140 is an abundant number, since it is smaller than the sum of its proper divisors (368177783900).

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

320215031140 is a wasteful number, since it uses less digits than its factorization.

320215031140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888492 (or 1888490 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 320215031140 its reverse (41130512023), we get a palindrome (361345543163).

The spelling of 320215031140 in words is "three hundred twenty billion, two hundred fifteen million, thirty-one thousand, one hundred forty".