312343040 has 80 divisors (see below), whose sum is σ = 793054152. Its totient is φ = 117571584.

The previous prime is 312343039. The next prime is 312343061. The reversal of 312343040 is 40343213.

It can be written as a sum of positive squares in 4 ways, for example, as 311451904 + 891136 = 17648^2 + 944^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39932 + ... + 47108.

Almost surely, 2^312343040 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 312343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396527076).

312343040 is an abundant number, since it is smaller than the sum of its proper divisors (480711112).

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

312343040 is an equidigital number, since it uses as much as digits as its factorization.

312343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217 (or 7201 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 312343040 is about 17673.2294728496. The cubic root of 312343040 is about 678.4907704578.

Adding to 312343040 its reverse (40343213), we get a palindrome (352686253).

The spelling of 312343040 in words is "three hundred twelve million, three hundred forty-three thousand, forty".