243480983 has 2 divisors, whose sum is σ = 243480984. Its totient is φ = 243480982.

The previous prime is 243480947. The next prime is 243480997. The reversal of 243480983 is 389084342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243480983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243480983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243480283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121740491 + 121740492.

It is an arithmetic number, because the mean of its divisors is an integer number (121740492).

Almost surely, 2^243480983 is an apocalyptic number.

243480983 is a deficient number, since it is larger than the sum of its proper divisors (1).

243480983 is an equidigital number, since it uses as much as digits as its factorization.

243480983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 243480983 is about 15603.8771784451. The cubic root of 243480983 is about 624.4365977706.

The spelling of 243480983 in words is "two hundred forty-three million, four hundred eighty thousand, nine hundred eighty-three".