318431520001 has 12 divisors (see below), whose sum is σ = 370842761748. Its totient is φ = 272630044512.

The previous prime is 318431519957. The next prime is 318431520019. The reversal of 318431520001 is 100025134813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 291601080001 + 26830440000 = 540001^2 + 163800^2 .

It is not a de Polignac number, because 318431520001 - 2¹⁹ = 318430995713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318431020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3662046 + ... + 3747991.

It is an arithmetic number, because the mean of its divisors is an integer number (30903563479).

Almost surely, 2^318431520001 is an apocalyptic number.

It is an amenable number.

318431520001 is a deficient number, since it is larger than the sum of its proper divisors (52411241747).

318431520001 is an equidigital number, since it uses as much as digits as its factorization.

318431520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410928 (or 7410921 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 318431520001 its reverse (100025134813), we get a palindrome (418456654814).

The spelling of 318431520001 in words is "three hundred eighteen billion, four hundred thirty-one million, five hundred twenty thousand, one".