243055107 has 8 divisors (see below), whose sum is σ = 360081680. Its totient is φ = 162036720.

The previous prime is 243055079. The next prime is 243055147. The reversal of 243055107 is 701550342.

It is a happy number.

It is not a de Polignac number, because 243055107 - 2²³ = 234666499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9002041 = 243055107 / (2 + 4 + 3 + 0 + 5 + 5 + 1 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243055147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500994 + ... + 4501047.

It is an arithmetic number, because the mean of its divisors is an integer number (45010210).

Almost surely, 2^243055107 is an apocalyptic number.

243055107 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

243055107 is a deficient number, since it is larger than the sum of its proper divisors (117026573).

243055107 is an equidigital number, since it uses as much as digits as its factorization.

243055107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002050 (or 9002044 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 243055107 is about 15590.2247257697. The cubic root of 243055107 is about 624.0723150289.

The spelling of 243055107 in words is "two hundred forty-three million, fifty-five thousand, one hundred seven".