3131324312320 has 72 divisors (see below), whose sum is σ = 7511849498160. Its totient is φ = 1250634485760.

The previous prime is 3131324312287. The next prime is 3131324312321. The reversal of 3131324312320 is 232134231313.

It is not an unprimeable number, because it can be changed into a prime (3131324312321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004410 + ... + 2696569.

It is an arithmetic number, because the mean of its divisors is an integer number (104331243030).

Almost surely, 2^{3131324312320} is an apocalyptic number.

It is an amenable number.

3131324312320 is an abundant number, since it is smaller than the sum of its proper divisors (4380525185840).

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

3131324312320 is an equidigital number, since it uses as much as digits as its factorization.

3131324312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701661 (or 3701647 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 3131324312320 its reverse (232134231313), we get a palindrome (3363458543633).

The spelling of 3131324312320 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-four million, three hundred twelve thousand, three hundred twenty".