312031030020 has 48 divisors (see below), whose sum is σ = 874504357440. Its totient is φ = 83130420096.

The previous prime is 312031030013. The next prime is 312031030033. The reversal of 312031030020 is 20030130213.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 2368282 + ... + 2496561.

It is an arithmetic number, because the mean of its divisors is an integer number (18218840780).

Almost surely, 2^312031030020 is an apocalyptic number.

312031030020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312031030020 is an abundant number, since it is smaller than the sum of its proper divisors (562473327420).

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

312031030020 is a wasteful number, since it uses less digits than its factorization.

312031030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865924 (or 4865922 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 312031030020 its reverse (20030130213), we get a palindrome (332061160233).

The spelling of 312031030020 in words is "three hundred twelve billion, thirty-one million, thirty thousand, twenty".