312220113311 has 2 divisors, whose sum is σ = 312220113312. Its totient is φ = 312220113310.

The previous prime is 312220113223. The next prime is 312220113343. The reversal of 312220113311 is 113311022213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312220113311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312220113011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156110056655 + 156110056656.

It is an arithmetic number, because the mean of its divisors is an integer number (156110056656).

Almost surely, 2^312220113311 is an apocalyptic number.

312220113311 is a deficient number, since it is larger than the sum of its proper divisors (1).

312220113311 is an equidigital number, since it uses as much as digits as its factorization.

312220113311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312220113311 its reverse (113311022213), we get a palindrome (425531135524).

The spelling of 312220113311 in words is "three hundred twelve billion, two hundred twenty million, one hundred thirteen thousand, three hundred eleven".