312404323341223 has 4 divisors (see below), whose sum is σ = 313129159358688. Its totient is φ = 311679487323760.

The previous prime is 312404323341203. The next prime is 312404323341269. The reversal of 312404323341223 is 322143323404213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312404323341223 is a prime.

It is a super-2 number, since 2×312404323341223² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312404323341203) 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, 362418008086 + ... + 362418008947.

It is an arithmetic number, because the mean of its divisors is an integer number (78282289839672).

Almost surely, 2^{312404323341223} is an apocalyptic number.

312404323341223 is a deficient number, since it is larger than the sum of its proper divisors (724836017465).

312404323341223 is an equidigital number, since it uses as much as digits as its factorization.

312404323341223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724836017464.

The product of its (nonzero) digits is 248832, while the sum is 37.

Adding to 312404323341223 its reverse (322143323404213), we get a palindrome (634547646745436).

The spelling of 312404323341223 in words is "three hundred twelve trillion, four hundred four billion, three hundred twenty-three million, three hundred forty-one thousand, two hundred twenty-three".