243250351 has 4 divisors (see below), whose sum is σ = 243390400. Its totient is φ = 243110304.

The previous prime is 243250349. The next prime is 243250361. The reversal of 243250351 is 153052342.

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 243250351 - 2¹ = 243250349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243250361) 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, 67386 + ... + 70903.

It is an arithmetic number, because the mean of its divisors is an integer number (60847600).

Almost surely, 2^243250351 is an apocalyptic number.

243250351 is a deficient number, since it is larger than the sum of its proper divisors (140049).

243250351 is a wasteful number, since it uses less digits than its factorization.

243250351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140048.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 243250351 is about 15596.4852130216. The cubic root of 243250351 is about 624.2393742130.

The spelling of 243250351 in words is "two hundred forty-three million, two hundred fifty thousand, three hundred fifty-one".