320013131012 has 12 divisors (see below), whose sum is σ = 570589450956. Its totient is φ = 156987573600.

The previous prime is 320013131003. The next prime is 320013131027. The reversal of 320013131012 is 210131310023.

It can be written as a sum of positive squares in 2 ways, for example, as 105323615296 + 214689515716 = 324536^2 + 463346^2 .

It is a super-2 number, since 2×320013131012² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754747739 + ... + 754748162.

It is an arithmetic number, because the mean of its divisors is an integer number (47549120913).

Almost surely, 2^320013131012 is an apocalyptic number.

It is an amenable number.

320013131012 is a deficient number, since it is larger than the sum of its proper divisors (250576319944).

320013131012 is a wasteful number, since it uses less digits than its factorization.

320013131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509495958 (or 1509495956 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 320013131012 its reverse (210131310023), we get a palindrome (530144441035).

The spelling of 320013131012 in words is "three hundred twenty billion, thirteen million, one hundred thirty-one thousand, twelve".