312440313 has 8 divisors (see below), whose sum is σ = 438512800. Its totient is φ = 197330688.

The previous prime is 312440311. The next prime is 312440329. The reversal of 312440313 is 313044213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312440313 - 2¹ = 312440311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312440313.

It is not an unprimeable number, because it can be changed into a prime (312440311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740648 + ... + 2740761.

It is an arithmetic number, because the mean of its divisors is an integer number (54814100).

Almost surely, 2^312440313 is an apocalyptic number.

It is an amenable number.

312440313 is a deficient number, since it is larger than the sum of its proper divisors (126072487).

312440313 is a wasteful number, since it uses less digits than its factorization.

312440313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481431.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 312440313 is about 17675.9812457470. The cubic root of 312440313 is about 678.5611972793.

Adding to 312440313 its reverse (313044213), we get a palindrome (625484526).

The spelling of 312440313 in words is "three hundred twelve million, four hundred forty thousand, three hundred thirteen".