243255320254 has 4 divisors (see below), whose sum is σ = 364882980384. Its totient is φ = 121627660126.

The previous prime is 243255320227. The next prime is 243255320257. The reversal of 243255320254 is 452023552342.

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

It is a super-2 number, since 2×243255320254² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243255320257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60813830062 + ... + 60813830065.

It is an arithmetic number, because the mean of its divisors is an integer number (91220745096).

Almost surely, 2^243255320254 is an apocalyptic number.

243255320254 is a deficient number, since it is larger than the sum of its proper divisors (121627660130).

243255320254 is a wasteful number, since it uses less digits than its factorization.

243255320254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121627660129.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 243255320254 its reverse (452023552342), we get a palindrome (695278872596).

The spelling of 243255320254 in words is "two hundred forty-three billion, two hundred fifty-five million, three hundred twenty thousand, two hundred fifty-four".