312103001130320 has 20 divisors (see below), whose sum is σ = 725639477628180. Its totient is φ = 124841200452096.

The previous prime is 312103001130307. The next prime is 312103001130329. The reversal of 312103001130320 is 23031100301213.

It can be written as a sum of positive squares in 2 ways, for example, as 176189094093376 + 135913907036944 = 13273624^2 + 11658212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 312103001130292 and 312103001130301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312103001130329) 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 3 ways as a sum of consecutive naturals, for example, 1950643756985 + ... + 1950643757144.

It is an arithmetic number, because the mean of its divisors is an integer number (36281973881409).

Almost surely, 2^{312103001130320} is an apocalyptic number.

It is an amenable number.

312103001130320 is an abundant number, since it is smaller than the sum of its proper divisors (413536476497860).

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

312103001130320 is a wasteful number, since it uses less digits than its factorization.

312103001130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901287514142 (or 3901287514136 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 312103001130320 its reverse (23031100301213), we get a palindrome (335134101431533).

The spelling of 312103001130320 in words is "three hundred twelve trillion, one hundred three billion, one million, one hundred thirty thousand, three hundred twenty".