243961306 has 8 divisors (see below), whose sum is σ = 366199200. Its totient is φ = 121894908.

The previous prime is 243961301. The next prime is 243961307. The reversal of 243961306 is 603169342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (243961301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39256 + ... + 45043.

It is an arithmetic number, because the mean of its divisors is an integer number (45774900).

Almost surely, 2^243961306 is an apocalyptic number.

243961306 is a deficient number, since it is larger than the sum of its proper divisors (122237894).

243961306 is a wasteful number, since it uses less digits than its factorization.

243961306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85748.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 243961306 is about 15619.2607379479. The cubic root of 243961306 is about 624.8469436411.

The spelling of 243961306 in words is "two hundred forty-three million, nine hundred sixty-one thousand, three hundred six".