312112543540 has 48 divisors (see below), whose sum is σ = 749125948032. Its totient is φ = 107002037376.

The previous prime is 312112543531. The next prime is 312112543559. The reversal of 312112543540 is 45345211213.

It is a congruent number.

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, 1984639 + ... + 2136121.

It is an arithmetic number, because the mean of its divisors is an integer number (15606790584).

Almost surely, 2^312112543540 is an apocalyptic number.

It is an amenable number.

312112543540 is an abundant number, since it is smaller than the sum of its proper divisors (437013404492).

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

312112543540 is a wasteful number, since it uses less digits than its factorization.

312112543540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166216 (or 166214 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 312112543540 its reverse (45345211213), we get a palindrome (357457754753).

The spelling of 312112543540 in words is "three hundred twelve billion, one hundred twelve million, five hundred forty-three thousand, five hundred forty".