311430047 has 2 divisors, whose sum is σ = 311430048. Its totient is φ = 311430046.

The previous prime is 311430023. The next prime is 311430059. The reversal of 311430047 is 740034113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311430047 - 2¹⁶ = 311364511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311430347) 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, 155715023 + 155715024.

It is an arithmetic number, because the mean of its divisors is an integer number (155715024).

Almost surely, 2^311430047 is an apocalyptic number.

311430047 is a deficient number, since it is larger than the sum of its proper divisors (1).

311430047 is an equidigital number, since it uses as much as digits as its factorization.

311430047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 311430047 is about 17647.3807404952. The cubic root of 311430047 is about 677.8290387569.

The spelling of 311430047 in words is "three hundred eleven million, four hundred thirty thousand, forty-seven".