312111213353 has 2 divisors, whose sum is σ = 312111213354. Its totient is φ = 312111213352.

The previous prime is 312111213283. The next prime is 312111213361. The reversal of 312111213353 is 353312111213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157809946009 + 154301267344 = 397253^2 + 392812^2 .

It is a cyclic number.

It is not a de Polignac number, because 312111213353 - 2⁸ = 312111213097 is a prime.

It is not a weakly prime, because it can be changed into another prime (312111210353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156055606676 + 156055606677.

It is an arithmetic number, because the mean of its divisors is an integer number (156055606677).

Almost surely, 2^312111213353 is an apocalyptic number.

It is an amenable number.

312111213353 is a deficient number, since it is larger than the sum of its proper divisors (1).

312111213353 is an equidigital number, since it uses as much as digits as its factorization.

312111213353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

Adding to 312111213353 its reverse (353312111213), we get a palindrome (665423324566).

The spelling of 312111213353 in words is "three hundred twelve billion, one hundred eleven million, two hundred thirteen thousand, three hundred fifty-three".