312135611 has 2 divisors, whose sum is σ = 312135612. Its totient is φ = 312135610.

The previous prime is 312135587. The next prime is 312135641. The reversal of 312135611 is 116531213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312135611 is a prime.

It is not a weakly prime, because it can be changed into another prime (312135641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156067805 + 156067806.

It is an arithmetic number, because the mean of its divisors is an integer number (156067806).

Almost surely, 2^312135611 is an apocalyptic number.

312135611 is a deficient number, since it is larger than the sum of its proper divisors (1).

312135611 is an equidigital number, since it uses as much as digits as its factorization.

312135611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 23.

The square root of 312135611 is about 17667.3600461416. The cubic root of 312135611 is about 678.3405405176.

Adding to 312135611 its reverse (116531213), we get a palindrome (428666824).

The spelling of 312135611 in words is "three hundred twelve million, one hundred thirty-five thousand, six hundred eleven".