243661035 has 16 divisors (see below), whose sum is σ = 410376960. Its totient is φ = 123112800.

The previous prime is 243661031. The next prime is 243661037. The reversal of 243661035 is 530166342.

It is not a de Polignac number, because 243661035 - 2² = 243661031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243660993 and 243661011.

It is not an unprimeable number, because it can be changed into a prime (243661031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427191 + ... + 427760.

It is an arithmetic number, because the mean of its divisors is an integer number (25648560).

Almost surely, 2^243661035 is an apocalyptic number.

243661035 is a deficient number, since it is larger than the sum of its proper divisors (166715925).

243661035 is a wasteful number, since it uses less digits than its factorization.

243661035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854978.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 243661035 is about 15609.6455757330. The cubic root of 243661035 is about 624.5904815968.

The spelling of 243661035 in words is "two hundred forty-three million, six hundred sixty-one thousand, thirty-five".