20312103231304 has 32 divisors (see below), whose sum is σ = 38567759443200. Its totient is φ = 10027370545920.

The previous prime is 20312103231289. The next prime is 20312103231317. The reversal of 20312103231304 is 40313230121302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72008989 + ... + 72290515.

It is an arithmetic number, because the mean of its divisors is an integer number (1205242482600).

Almost surely, 2^{20312103231304} is an apocalyptic number.

It is an amenable number.

20312103231304 is a deficient number, since it is larger than the sum of its proper divisors (18255656211896).

20312103231304 is a wasteful number, since it uses less digits than its factorization.

20312103231304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395773 (or 395769 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20312103231304 its reverse (40313230121302), we get a palindrome (60625333352606).

The spelling of 20312103231304 in words is "twenty trillion, three hundred twelve billion, one hundred three million, two hundred thirty-one thousand, three hundred four".