312135039323778 has 16 divisors (see below), whose sum is σ = 681021903979296. Its totient is φ = 94586375552640.

The previous prime is 312135039323761. The next prime is 312135039323857. The reversal of 312135039323778 is 877323930531213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364659388751 + ... + 2364659388882.

It is an arithmetic number, because the mean of its divisors is an integer number (42563868998706).

Almost surely, 2^{312135039323778} is an apocalyptic number.

312135039323778 is an abundant number, since it is smaller than the sum of its proper divisors (368886864655518).

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

312135039323778 is a wasteful number, since it uses less digits than its factorization.

312135039323778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729318777649.

The product of its (nonzero) digits is 17146080, while the sum is 57.

The spelling of 312135039323778 in words is "three hundred twelve trillion, one hundred thirty-five billion, thirty-nine million, three hundred twenty-three thousand, seven hundred seventy-eight".