31320123342311 has 2 divisors, whose sum is σ = 31320123342312. Its totient is φ = 31320123342310.

The previous prime is 31320123342301. The next prime is 31320123342317. The reversal of 31320123342311 is 11324332102313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31320123342311 - 2¹⁴ = 31320123325927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31320123342317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660061671155 + 15660061671156.

It is an arithmetic number, because the mean of its divisors is an integer number (15660061671156).

Almost surely, 2^{31320123342311} is an apocalyptic number.

31320123342311 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320123342311 is an equidigital number, since it uses as much as digits as its factorization.

31320123342311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 31320123342311 its reverse (11324332102313), we get a palindrome (42644455444624).

The spelling of 31320123342311 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty-three million, three hundred forty-two thousand, three hundred eleven".