312440430453601 has 2 divisors, whose sum is σ = 312440430453602. Its totient is φ = 312440430453600.

The previous prime is 312440430453581. The next prime is 312440430453629. The reversal of 312440430453601 is 106354034044213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 293354716015201 + 19085714438400 = 17127601^2 + 4368720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312440430453601 is a prime.

It is a super-2 number, since 2×312440430453601² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312440430453001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156220215226800 + 156220215226801.

It is an arithmetic number, because the mean of its divisors is an integer number (156220215226801).

Almost surely, 2^{312440430453601} is an apocalyptic number.

It is an amenable number.

312440430453601 is a deficient number, since it is larger than the sum of its proper divisors (1).

312440430453601 is an equidigital number, since it uses as much as digits as its factorization.

312440430453601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 40.

Adding to 312440430453601 its reverse (106354034044213), we get a palindrome (418794464497814).

The spelling of 312440430453601 in words is "three hundred twelve trillion, four hundred forty billion, four hundred thirty million, four hundred fifty-three thousand, six hundred one".