243451243 has 8 divisors (see below), whose sum is σ = 278622720. Its totient is φ = 208377960.

The previous prime is 243451213. The next prime is 243451283. The reversal of 243451243 is 342154342.

It is a happy number.

243451243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243451243 - 2¹⁷ = 243320171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243451213) 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, 19153 + ... + 29218.

It is an arithmetic number, because the mean of its divisors is an integer number (34827840).

Almost surely, 2^243451243 is an apocalyptic number.

243451243 is a deficient number, since it is larger than the sum of its proper divisors (35171477).

243451243 is an equidigital number, since it uses as much as digits as its factorization.

243451243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49097.

The product of its digits is 11520, while the sum is 28.

The square root of 243451243 is about 15602.9241810630. The cubic root of 243451243 is about 624.4111727862.

The spelling of 243451243 in words is "two hundred forty-three million, four hundred fifty-one thousand, two hundred forty-three".