320123003131 has 4 divisors (see below), whose sum is σ = 320691605832. Its totient is φ = 319554400432.

The previous prime is 320123003111. The next prime is 320123003171. The reversal of 320123003131 is 131300321023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131300321023 = 359167 ⋅365569.

It is a cyclic number.

It is not a de Polignac number, because 320123003131 - 2⁵ = 320123003099 is a prime.

It is a super-2 number, since 2×320123003131² (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 = 320123003099 and 320123003108.

It is not an unprimeable number, because it can be changed into a prime (320123003111) 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, 284300506 + ... + 284301631.

It is an arithmetic number, because the mean of its divisors is an integer number (80172901458).

Almost surely, 2^320123003131 is an apocalyptic number.

320123003131 is a deficient number, since it is larger than the sum of its proper divisors (568602701).

320123003131 is an equidigital number, since it uses as much as digits as its factorization.

320123003131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568602700.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 320123003131 its reverse (131300321023), we get a palindrome (451423324154).

The spelling of 320123003131 in words is "three hundred twenty billion, one hundred twenty-three million, three thousand, one hundred thirty-one".