243413983 has 2 divisors, whose sum is σ = 243413984. Its totient is φ = 243413982.

The previous prime is 243413977. The next prime is 243414019. The reversal of 243413983 is 389314342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243413983 - 2¹⁷ = 243282911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243413083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121706991 + 121706992.

It is an arithmetic number, because the mean of its divisors is an integer number (121706992).

Almost surely, 2^243413983 is an apocalyptic number.

243413983 is a deficient number, since it is larger than the sum of its proper divisors (1).

243413983 is an equidigital number, since it uses as much as digits as its factorization.

243413983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 243413983 is about 15601.7301284185. The cubic root of 243413983 is about 624.3793159662.

The spelling of 243413983 in words is "two hundred forty-three million, four hundred thirteen thousand, nine hundred eighty-three".