312323440313 has 4 divisors (see below), whose sum is σ = 312332300148. Its totient is φ = 312314580480.

The previous prime is 312323440301. The next prime is 312323440321. The reversal of 312323440313 is 313044323213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313044323213 = 30707 ⋅10194559.

It can be written as a sum of positive squares in 2 ways, for example, as 306264841744 + 6058598569 = 553412^2 + 77837^2 .

It is a cyclic number.

It is not a de Polignac number, because 312323440313 - 2²⁸ = 312055004857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312323440393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4376828 + ... + 4447613.

It is an arithmetic number, because the mean of its divisors is an integer number (78083075037).

Almost surely, 2^312323440313 is an apocalyptic number.

It is an amenable number.

312323440313 is a deficient number, since it is larger than the sum of its proper divisors (8859835).

312323440313 is an equidigital number, since it uses as much as digits as its factorization.

312323440313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8859834.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 312323440313 its reverse (313044323213), we get a palindrome (625367763526).

The spelling of 312323440313 in words is "three hundred twelve billion, three hundred twenty-three million, four hundred forty thousand, three hundred thirteen".