990343331324311 has 2 divisors, whose sum is σ = 990343331324312. Its totient is φ = 990343331324310.

The previous prime is 990343331324233. The next prime is 990343331324387. The reversal of 990343331324311 is 113423133343099.

It is a strong prime.

It is an emirp because it is prime and its reverse (113423133343099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990343331324311 - 2²⁵ = 990343297769879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990343331384311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495171665662155 + 495171665662156.

It is an arithmetic number, because the mean of its divisors is an integer number (495171665662156).

Almost surely, 2^{990343331324311} is an apocalyptic number.

990343331324311 is a deficient number, since it is larger than the sum of its proper divisors (1).

990343331324311 is an equidigital number, since it uses as much as digits as its factorization.

990343331324311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 49.

The spelling of 990343331324311 in words is "nine hundred ninety trillion, three hundred forty-three billion, three hundred thirty-one million, three hundred twenty-four thousand, three hundred eleven".