31230300020 has 12 divisors (see below), whose sum is σ = 65583630084. Its totient is φ = 12492120000.

The previous prime is 31230299959. The next prime is 31230300037. The reversal of 31230300020 is 2000303213.

It can be written as a sum of positive squares in 2 ways, for example, as 20365573264 + 10864726756 = 142708^2 + 104234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31230299968 and 31230300004.

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, 780757481 + ... + 780757520.

It is an arithmetic number, because the mean of its divisors is an integer number (5465302507).

Almost surely, 2^31230300020 is an apocalyptic number.

It is an amenable number.

31230300020 is an abundant number, since it is smaller than the sum of its proper divisors (34353330064).

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

31230300020 is a wasteful number, since it uses less digits than its factorization.

31230300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561515010 (or 1561515008 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 31230300020 its reverse (2000303213), we get a palindrome (33230603233).

The spelling of 31230300020 in words is "thirty-one billion, two hundred thirty million, three hundred thousand, twenty".