981200243 has 2 divisors, whose sum is σ = 981200244. Its totient is φ = 981200242.

The previous prime is 981200219. The next prime is 981200281. The reversal of 981200243 is 342002189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981200243 - 2¹² = 981196147 is a prime.

It is not a weakly prime, because it can be changed into another prime (981200443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490600121 + 490600122.

It is an arithmetic number, because the mean of its divisors is an integer number (490600122).

Almost surely, 2^981200243 is an apocalyptic number.

981200243 is a deficient number, since it is larger than the sum of its proper divisors (1).

981200243 is an equidigital number, since it uses as much as digits as its factorization.

981200243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 981200243 is about 31324.1159971036. The cubic root of 981200243 is about 993.6937288760.

The spelling of 981200243 in words is "nine hundred eighty-one million, two hundred thousand, two hundred forty-three".