312330130020 has 72 divisors (see below), whose sum is σ = 950635006776. Its totient is φ = 83003761152.

The previous prime is 312330130019. The next prime is 312330130031. The reversal of 312330130020 is 20031033213.

312330130020 is a `hidden beast` number, since 3 + 12 + 330 + 1 + 300 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 178426828836 + 133903301184 = 422406^2 + 365928^2 .

It is a super-2 number, since 2×312330130020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 312330129975 and 312330130002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2908297 + ... + 3013776.

It is an arithmetic number, because the mean of its divisors is an integer number (13203263983).

Almost surely, 2^312330130020 is an apocalyptic number.

312330130020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312330130020 is an abundant number, since it is smaller than the sum of its proper divisors (638304876756).

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

312330130020 is a wasteful number, since it uses less digits than its factorization.

312330130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922381 (or 5922376 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 312330130020 its reverse (20031033213), we get a palindrome (332361163233).

The spelling of 312330130020 in words is "three hundred twelve billion, three hundred thirty million, one hundred thirty thousand, twenty".