243400353 has 8 divisors (see below), whose sum is σ = 370895808. Its totient is φ = 139085904.

The previous prime is 243400349. The next prime is 243400361. The reversal of 243400353 is 353004342.

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

It is not a de Polignac number, because 243400353 - 2² = 243400349 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243400363) 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, 5795226 + ... + 5795267.

It is an arithmetic number, because the mean of its divisors is an integer number (46361976).

Almost surely, 2^243400353 is an apocalyptic number.

It is an amenable number.

243400353 is a deficient number, since it is larger than the sum of its proper divisors (127495455).

243400353 is a wasteful number, since it uses less digits than its factorization.

243400353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11590503.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 243400353 is about 15601.2933117739. The cubic root of 243400353 is about 624.3676616796.

Adding to 243400353 its reverse (353004342), we get a palindrome (596404695).

The spelling of 243400353 in words is "two hundred forty-three million, four hundred thousand, three hundred fifty-three".