311422409 has 2 divisors, whose sum is σ = 311422410. Its totient is φ = 311422408.

The previous prime is 311422403. The next prime is 311422459. The reversal of 311422409 is 904224113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186049600 + 125372809 = 13640^2 + 11197^2 .

It is a cyclic number.

It is not a de Polignac number, because 311422409 - 2⁴ = 311422393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311422403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155711204 + 155711205.

It is an arithmetic number, because the mean of its divisors is an integer number (155711205).

Almost surely, 2^311422409 is an apocalyptic number.

It is an amenable number.

311422409 is a deficient number, since it is larger than the sum of its proper divisors (1).

311422409 is an equidigital number, since it uses as much as digits as its factorization.

311422409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 311422409 is about 17647.1643331160. The cubic root of 311422409 is about 677.8234973300.

The spelling of 311422409 in words is "three hundred eleven million, four hundred twenty-two thousand, four hundred nine".