312001320020 has 48 divisors (see below), whose sum is σ = 705780915840. Its totient is φ = 115171437696.

The previous prime is 312001320011. The next prime is 312001320023. The reversal of 312001320020 is 20023100213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312001319977 and 312001320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312001320023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895649 + ... + 1194231.

It is an arithmetic number, because the mean of its divisors is an integer number (14703769080).

Almost surely, 2^312001320020 is an apocalyptic number.

It is an amenable number.

312001320020 is an abundant number, since it is smaller than the sum of its proper divisors (393779595820).

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

312001320020 is a wasteful number, since it uses less digits than its factorization.

312001320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302624 (or 302622 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 312001320020 its reverse (20023100213), we get a palindrome (332024420233).

The spelling of 312001320020 in words is "three hundred twelve billion, one million, three hundred twenty thousand, twenty".