312402321200440 has 32 divisors (see below), whose sum is σ = 705442786706880. Its totient is φ = 124509805990272.

The previous prime is 312402321200383. The next prime is 312402321200443. The reversal of 312402321200440 is 44002123204213.

It is a junction number, because it is equal to n+sod(n) for n = 312402321200399 and 312402321200408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312402321200443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14097566592 + ... + 14097588751.

It is an arithmetic number, because the mean of its divisors is an integer number (22045087084590).

Almost surely, 2^{312402321200440} is an apocalyptic number.

It is an amenable number.

312402321200440 is an abundant number, since it is smaller than the sum of its proper divisors (393040465506440).

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

312402321200440 is a wasteful number, since it uses less digits than its factorization.

312402321200440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28195155631 (or 28195155627 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 312402321200440 its reverse (44002123204213), we get a palindrome (356404444404653).

The spelling of 312402321200440 in words is "three hundred twelve trillion, four hundred two billion, three hundred twenty-one million, two hundred thousand, four hundred forty".