312120345444 has 48 divisors (see below), whose sum is σ = 748029240000. Its totient is φ = 101219400576.

The previous prime is 312120345437. The next prime is 312120345451. The reversal of 312120345444 is 444543021213.

It is an interprime number because it is at equal distance from previous prime (312120345437) and next prime (312120345451).

It is a super-2 number, since 2×312120345444² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 6769782 + ... + 6815730.

It is an arithmetic number, because the mean of its divisors is an integer number (15583942500).

Almost surely, 2^312120345444 is an apocalyptic number.

It is an amenable number.

312120345444 is an abundant number, since it is smaller than the sum of its proper divisors (435908894556).

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

312120345444 is a wasteful number, since it uses less digits than its factorization.

312120345444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61292 (or 61290 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 312120345444 its reverse (444543021213), we get a palindrome (756663366657).

The spelling of 312120345444 in words is "three hundred twelve billion, one hundred twenty million, three hundred forty-five thousand, four hundred forty-four".