320313131004 has 24 divisors (see below), whose sum is σ = 747560018128. Its totient is φ = 106747799040.

The previous prime is 320313130997. The next prime is 320313131009. The reversal of 320313131004 is 400131313023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320313131009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848117 + ... + 2958444.

Almost surely, 2^320313131004 is an apocalyptic number.

It is an amenable number.

320313131004 is an abundant number, since it is smaller than the sum of its proper divisors (427246887124).

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

320313131004 is a wasteful number, since it uses less digits than its factorization.

320313131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811165 (or 5811163 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 320313131004 its reverse (400131313023), we get a palindrome (720444444027).

The spelling of 320313131004 in words is "three hundred twenty billion, three hundred thirteen million, one hundred thirty-one thousand, four".