312045140020 has 12 divisors (see below), whose sum is σ = 655294794084. Its totient is φ = 124818056000.

The previous prime is 312045139969. The next prime is 312045140171. The reversal of 312045140020 is 20041540213.

It can be written as a sum of positive squares in 2 ways, for example, as 246613546404 + 65431593616 = 496602^2 + 255796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312045139973 and 312045140000.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7801128481 + ... + 7801128520.

It is an arithmetic number, because the mean of its divisors is an integer number (54607899507).

Almost surely, 2^312045140020 is an apocalyptic number.

It is an amenable number.

312045140020 is an abundant number, since it is smaller than the sum of its proper divisors (343249654064).

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

312045140020 is a wasteful number, since it uses less digits than its factorization.

312045140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15602257010 (or 15602257008 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 312045140020 its reverse (20041540213), we get a palindrome (332086680233).

The spelling of 312045140020 in words is "three hundred twelve billion, forty-five million, one hundred forty thousand, twenty".