320244031031 has 4 divisors (see below), whose sum is σ = 320443065600. Its totient is φ = 320044996464.

The previous prime is 320244030991. The next prime is 320244031033. The reversal of 320244031031 is 130130442023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320244031031 is a prime.

It is a super-2 number, since 2×320244031031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320244030988 and 320244031006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320244031033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99514871 + ... + 99518088.

It is an arithmetic number, because the mean of its divisors is an integer number (80110766400).

Almost surely, 2^320244031031 is an apocalyptic number.

320244031031 is a deficient number, since it is larger than the sum of its proper divisors (199034569).

320244031031 is a wasteful number, since it uses less digits than its factorization.

320244031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199034568.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 320244031031 its reverse (130130442023), we get a palindrome (450374473054).

The spelling of 320244031031 in words is "three hundred twenty billion, two hundred forty-four million, thirty-one thousand, thirty-one".