312214640393 has 4 divisors (see below), whose sum is σ = 312219747840. Its totient is φ = 312209532948.

The previous prime is 312214640369. The next prime is 312214640399. The reversal of 312214640393 is 393046412213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312214640393 - 2¹⁴ = 312214624009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312214640399) 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 3 ways as a sum of consecutive naturals, for example, 2460905 + ... + 2584662.

It is an arithmetic number, because the mean of its divisors is an integer number (78054936960).

Almost surely, 2^312214640393 is an apocalyptic number.

It is an amenable number.

312214640393 is a deficient number, since it is larger than the sum of its proper divisors (5107447).

312214640393 is an equidigital number, since it uses as much as digits as its factorization.

312214640393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107446.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 312214640393 in words is "three hundred twelve billion, two hundred fourteen million, six hundred forty thousand, three hundred ninety-three".