312340324321 has 2 divisors, whose sum is σ = 312340324322. Its totient is φ = 312340324320.

The previous prime is 312340324273. The next prime is 312340324343. The reversal of 312340324321 is 123423043213.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280805667921 + 31534656400 = 529911^2 + 177580^2 .

It is a cyclic number.

It is not a de Polignac number, because 312340324321 - 2⁷ = 312340324193 is a prime.

It is a super-2 number, since 2×312340324321² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312340324321.

It is not a weakly prime, because it can be changed into another prime (312340354321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156170162160 + 156170162161.

It is an arithmetic number, because the mean of its divisors is an integer number (156170162161).

Almost surely, 2^312340324321 is an apocalyptic number.

It is an amenable number.

312340324321 is a deficient number, since it is larger than the sum of its proper divisors (1).

312340324321 is an equidigital number, since it uses as much as digits as its factorization.

312340324321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 312340324321 its reverse (123423043213), we get a palindrome (435763367534).

The spelling of 312340324321 in words is "three hundred twelve billion, three hundred forty million, three hundred twenty-four thousand, three hundred twenty-one".