243626371 has 4 divisors (see below), whose sum is σ = 257957352. Its totient is φ = 229295392.

The previous prime is 243626359. The next prime is 243626377. The reversal of 243626371 is 173626342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243626371 - 2¹¹ = 243624323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243626377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7165465 + ... + 7165498.

It is an arithmetic number, because the mean of its divisors is an integer number (64489338).

Almost surely, 2^243626371 is an apocalyptic number.

243626371 is a deficient number, since it is larger than the sum of its proper divisors (14330981).

243626371 is a wasteful number, since it uses less digits than its factorization.

243626371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14330980.

The product of its digits is 36288, while the sum is 34.

The square root of 243626371 is about 15608.5351971285. The cubic root of 243626371 is about 624.5608614440.

The spelling of 243626371 in words is "two hundred forty-three million, six hundred twenty-six thousand, three hundred seventy-one".