312031240444 has 96 divisors (see below), whose sum is σ = 686279784960. Its totient is φ = 120595219200.

The previous prime is 312031240441. The next prime is 312031240447. The reversal of 312031240444 is 444042130213.

It is an interprime number because it is at equal distance from previous prime (312031240441) and next prime (312031240447).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312031240441) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 19529379 + ... + 19545349.

It is an arithmetic number, because the mean of its divisors is an integer number (7148747760).

Almost surely, 2^312031240444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312031240444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343139892480).

312031240444 is an abundant number, since it is smaller than the sum of its proper divisors (374248544516).

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

312031240444 is a wasteful number, since it uses less digits than its factorization.

312031240444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16499 (or 16497 counting only the distinct ones).

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

Adding to 312031240444 its reverse (444042130213), we get a palindrome (756073370657).

The spelling of 312031240444 in words is "three hundred twelve billion, thirty-one million, two hundred forty thousand, four hundred forty-four".