320112303031021 has 12 divisors (see below), whose sum is σ = 342332308970100. Its totient is φ = 299260139548160.

The previous prime is 320112303030967. The next prime is 320112303031039. The reversal of 320112303031021 is 120130303211023.

It can be written as a sum of positive squares in 6 ways, for example, as 36326103168996 + 283786199862025 = 6027114^2 + 16845955^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320112303031021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320112303030983 and 320112303031001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320112303031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3716920120 + ... + 3717006241.

It is an arithmetic number, because the mean of its divisors is an integer number (28527692414175).

Almost surely, 2^{320112303031021} is an apocalyptic number.

It is an amenable number.

320112303031021 is a deficient number, since it is larger than the sum of its proper divisors (22220005939079).

320112303031021 is a wasteful number, since it uses less digits than its factorization.

320112303031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433926544 (or 7433926527 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 320112303031021 its reverse (120130303211023), we get a palindrome (440242606242044).

The spelling of 320112303031021 in words is "three hundred twenty trillion, one hundred twelve billion, three hundred three million, thirty-one thousand, twenty-one".