312226457 has 2 divisors, whose sum is σ = 312226458. Its totient is φ = 312226456.

The previous prime is 312226433. The next prime is 312226459. The reversal of 312226457 is 754622213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300536896 + 11689561 = 17336^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 312226457 - 2²⁴ = 295449241 is a prime.

Together with 312226459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312226459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156113228 + 156113229.

It is an arithmetic number, because the mean of its divisors is an integer number (156113229).

Almost surely, 2^312226457 is an apocalyptic number.

It is an amenable number.

312226457 is a deficient number, since it is larger than the sum of its proper divisors (1).

312226457 is an equidigital number, since it uses as much as digits as its factorization.

312226457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 312226457 is about 17669.9308713985. The cubic root of 312226457 is about 678.4063436974.

The spelling of 312226457 in words is "three hundred twelve million, two hundred twenty-six thousand, four hundred fifty-seven".