320313651506 has 32 divisors (see below), whose sum is σ = 491840693568. Its totient is φ = 156396136000.

The previous prime is 320313651499. The next prime is 320313651509. The reversal of 320313651506 is 605156313023.

It is a super-2 number, since 2×320313651506² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320313651509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46104725 + ... + 46111671.

It is an arithmetic number, because the mean of its divisors is an integer number (15370021674).

Almost surely, 2^320313651506 is an apocalyptic number.

320313651506 is a deficient number, since it is larger than the sum of its proper divisors (171527042062).

320313651506 is a wasteful number, since it uses less digits than its factorization.

320313651506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8986.

The product of its (nonzero) digits is 48600, while the sum is 35.

Adding to 320313651506 its reverse (605156313023), we get a palindrome (925469964529).

The spelling of 320313651506 in words is "three hundred twenty billion, three hundred thirteen million, six hundred fifty-one thousand, five hundred six".