990343111 has 2 divisors, whose sum is σ = 990343112. Its totient is φ = 990343110.

The previous prime is 990343091. The next prime is 990343117. The reversal of 990343111 is 111343099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 990343111 - 2¹¹ = 990341063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990343117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495171555 + 495171556.

It is an arithmetic number, because the mean of its divisors is an integer number (495171556).

Almost surely, 2^990343111 is an apocalyptic number.

990343111 is a deficient number, since it is larger than the sum of its proper divisors (1).

990343111 is an equidigital number, since it uses as much as digits as its factorization.

990343111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 990343111 is about 31469.7173644760. The cubic root of 990343111 is about 996.7706193268.

The spelling of 990343111 in words is "nine hundred ninety million, three hundred forty-three thousand, one hundred eleven".