320613131642 has 8 divisors (see below), whose sum is σ = 485681278932. Its totient is φ = 158719372000.

The previous prime is 320613131599. The next prime is 320613131651. The reversal of 320613131642 is 246131316023.

It can be written as a sum of positive squares in 2 ways, for example, as 317858036521 + 2755095121 = 563789^2 + 52489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×320613131642³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320613131599 and 320613131608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793596659 + ... + 793597062.

Almost surely, 2^320613131642 is an apocalyptic number.

320613131642 is a deficient number, since it is larger than the sum of its proper divisors (165068147290).

320613131642 is a wasteful number, since it uses less digits than its factorization.

320613131642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587193824.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 320613131642 its reverse (246131316023), we get a palindrome (566744447665).

The spelling of 320613131642 in words is "three hundred twenty billion, six hundred thirteen million, one hundred thirty-one thousand, six hundred forty-two".