311430224012989 has 2 divisors, whose sum is σ = 311430224012990. Its totient is φ = 311430224012988.

The previous prime is 311430224012933. The next prime is 311430224013037. The reversal of 311430224012989 is 989210422034113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156192130359225 + 155238093653764 = 12497685^2 + 12459458^2 .

It is an emirp because it is prime and its reverse (989210422034113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311430224012989 - 2²¹ = 311430221915837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311430224013989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155715112006494 + 155715112006495.

It is an arithmetic number, because the mean of its divisors is an integer number (155715112006495).

Almost surely, 2^{311430224012989} is an apocalyptic number.

It is an amenable number.

311430224012989 is a deficient number, since it is larger than the sum of its proper divisors (1).

311430224012989 is an equidigital number, since it uses as much as digits as its factorization.

311430224012989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 311430224012989 in words is "three hundred eleven trillion, four hundred thirty billion, two hundred twenty-four million, twelve thousand, nine hundred eighty-nine".