311453473 has 2 divisors, whose sum is σ = 311453474. Its totient is φ = 311453472.

The previous prime is 311453437. The next prime is 311453479. The reversal of 311453473 is 374354113.

Together with previous prime (311453437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311416609 + 36864 = 17647^2 + 192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311453473 is a prime.

It is not a weakly prime, because it can be changed into another prime (311453479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155726736 + 155726737.

It is an arithmetic number, because the mean of its divisors is an integer number (155726737).

Almost surely, 2^311453473 is an apocalyptic number.

It is an amenable number.

311453473 is a deficient number, since it is larger than the sum of its proper divisors (1).

311453473 is an equidigital number, since it uses as much as digits as its factorization.

311453473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 311453473 is about 17648.0444525732. The cubic root of 311453473 is about 677.8460339324.

The spelling of 311453473 in words is "three hundred eleven million, four hundred fifty-three thousand, four hundred seventy-three".