243328137 has 16 divisors (see below), whose sum is σ = 353821440. Its totient is φ = 147843072.

The previous prime is 243328103. The next prime is 243328159. The reversal of 243328137 is 731823342.

It is not a de Polignac number, because 243328137 - 2⁸ = 243327881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243328098 and 243328107.

It is not an unprimeable number, because it can be changed into a prime (243328237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36408 + ... + 42569.

It is an arithmetic number, because the mean of its divisors is an integer number (22113840).

Almost surely, 2^243328137 is an apocalyptic number.

It is an amenable number.

243328137 is a deficient number, since it is larger than the sum of its proper divisors (110493303).

243328137 is a wasteful number, since it uses less digits than its factorization.

243328137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79072.

The product of its digits is 24192, while the sum is 33.

The square root of 243328137 is about 15598.9787165699. The cubic root of 243328137 is about 624.3059063665.

The spelling of 243328137 in words is "two hundred forty-three million, three hundred twenty-eight thousand, one hundred thirty-seven".