312403113020440 has 64 divisors (see below), whose sum is σ = 757008023808960. Its totient is φ = 115344079833600.

The previous prime is 312403113020267. The next prime is 312403113020459. The reversal of 312403113020440 is 44020311304213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312403113020399 and 312403113020408.

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, 219790 + ... + 24997090.

It is an arithmetic number, because the mean of its divisors is an integer number (11828250372015).

Almost surely, 2^{312403113020440} is an apocalyptic number.

It is an amenable number.

312403113020440 is an abundant number, since it is smaller than the sum of its proper divisors (444604910788520).

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

312403113020440 is a wasteful number, since it uses less digits than its factorization.

312403113020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801572 (or 24801568 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 312403113020440 its reverse (44020311304213), we get a palindrome (356423424324653).

The spelling of 312403113020440 in words is "three hundred twelve trillion, four hundred three billion, one hundred thirteen million, twenty thousand, four hundred forty".