312220135043423 has 2 divisors, whose sum is σ = 312220135043424. Its totient is φ = 312220135043422.

The previous prime is 312220135043413. The next prime is 312220135043431. The reversal of 312220135043423 is 324340531022213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312220135043423 - 2⁶ = 312220135043359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312220135043413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156110067521711 + 156110067521712.

It is an arithmetic number, because the mean of its divisors is an integer number (156110067521712).

Almost surely, 2^{312220135043423} is an apocalyptic number.

312220135043423 is a deficient number, since it is larger than the sum of its proper divisors (1).

312220135043423 is an equidigital number, since it uses as much as digits as its factorization.

312220135043423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 312220135043423 its reverse (324340531022213), we get a palindrome (636560666065636).

The spelling of 312220135043423 in words is "three hundred twelve trillion, two hundred twenty billion, one hundred thirty-five million, forty-three thousand, four hundred twenty-three".