312012320304040 has 64 divisors (see below), whose sum is σ = 704086388323200. Its totient is φ = 124439135853312.

The previous prime is 312012320304023. The next prime is 312012320304067. The reversal of 312012320304040 is 40403023210213.

It is a junction number, because it is equal to n+sod(n) for n = 312012320303996 and 312012320304014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48725949 + ... + 54756211.

It is an arithmetic number, because the mean of its divisors is an integer number (11001349817550).

Almost surely, 2^{312012320304040} is an apocalyptic number.

It is an amenable number.

312012320304040 is an abundant number, since it is smaller than the sum of its proper divisors (392074068019160).

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

312012320304040 is a wasteful number, since it uses less digits than its factorization.

312012320304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6034066 (or 6034062 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 312012320304040 its reverse (40403023210213), we get a palindrome (352415343514253).

The spelling of 312012320304040 in words is "three hundred twelve trillion, twelve billion, three hundred twenty million, three hundred four thousand, forty".