312240444 has 12 divisors (see below), whose sum is σ = 728561064. Its totient is φ = 104080144.

The previous prime is 312240427. The next prime is 312240473. The reversal of 312240444 is 444042213.

It is a happy number.

312240444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13010007 + ... + 13010030.

It is an arithmetic number, because the mean of its divisors is an integer number (60713422).

Almost surely, 2^312240444 is an apocalyptic number.

It is an amenable number.

312240444 is an abundant number, since it is smaller than the sum of its proper divisors (416320620).

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

312240444 is a wasteful number, since it uses less digits than its factorization.

312240444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26020044 (or 26020042 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 312240444 is about 17670.3266523288. The cubic root of 312240444 is about 678.4164738744.

Adding to 312240444 its reverse (444042213), we get a palindrome (756282657).

The spelling of 312240444 in words is "three hundred twelve million, two hundred forty thousand, four hundred forty-four".