312211313223049 has 2 divisors, whose sum is σ = 312211313223050. Its totient is φ = 312211313223048.

The previous prime is 312211313223023. The next prime is 312211313223091. The reversal of 312211313223049 is 940322313112213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196417422010000 + 115793891213049 = 14014900^2 + 10760757^2 .

It is a cyclic number.

It is not a de Polignac number, because 312211313223049 - 2⁴⁷ = 171473824867721 is a prime.

It is a super-2 number, since 2×312211313223049² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312211313222999 and 312211313223017.

It is not a weakly prime, because it can be changed into another prime (312211313223749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156105656611524 + 156105656611525.

It is an arithmetic number, because the mean of its divisors is an integer number (156105656611525).

Almost surely, 2^{312211313223049} is an apocalyptic number.

It is an amenable number.

312211313223049 is a deficient number, since it is larger than the sum of its proper divisors (1).

312211313223049 is an equidigital number, since it uses as much as digits as its factorization.

312211313223049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 312211313223049 in words is "three hundred twelve trillion, two hundred eleven billion, three hundred thirteen million, two hundred twenty-three thousand, forty-nine".