312111440344 has 16 divisors (see below), whose sum is σ = 638409764520. Its totient is φ = 141868836480.

The previous prime is 312111440299. The next prime is 312111440363. The reversal of 312111440344 is 443044111213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773360369 + ... + 1773360544.

Almost surely, 2^312111440344 is an apocalyptic number.

It is an amenable number.

312111440344 is an abundant number, since it is smaller than the sum of its proper divisors (326298324176).

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

312111440344 is a wasteful number, since it uses less digits than its factorization.

312111440344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546720930 (or 3546720926 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 312111440344 its reverse (443044111213), we get a palindrome (755155551557).

The spelling of 312111440344 in words is "three hundred twelve billion, one hundred eleven million, four hundred forty thousand, three hundred forty-four".