312132120020 has 48 divisors (see below), whose sum is σ = 781687404288. Its totient is φ = 102363824640.

The previous prime is 312132119993. The next prime is 312132120029. The reversal of 312132120020 is 20021231213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312132120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48464501 + ... + 48470940.

It is an arithmetic number, because the mean of its divisors is an integer number (16285154256).

Almost surely, 2^312132120020 is an apocalyptic number.

It is an amenable number.

312132120020 is an abundant number, since it is smaller than the sum of its proper divisors (469555284268).

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

312132120020 is a wasteful number, since it uses less digits than its factorization.

312132120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96935480 (or 96935478 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 312132120020 its reverse (20021231213), we get a palindrome (332153351233).

The spelling of 312132120020 in words is "three hundred twelve billion, one hundred thirty-two million, one hundred twenty thousand, twenty".