243123454522 has 32 divisors (see below), whose sum is σ = 399997148544. Its totient is φ = 110144318400.

The previous prime is 243123454493. The next prime is 243123454589. The reversal of 243123454522 is 225454321342.

It is a happy number.

It is a super-3 number, since 3×243123454522³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614997 + ... + 929767.

It is an arithmetic number, because the mean of its divisors is an integer number (12499910892).

Almost surely, 2^243123454522 is an apocalyptic number.

243123454522 is a deficient number, since it is larger than the sum of its proper divisors (156873694022).

243123454522 is a wasteful number, since it uses less digits than its factorization.

243123454522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315334.

The product of its digits is 230400, while the sum is 37.

Adding to 243123454522 its reverse (225454321342), we get a palindrome (468577775864).

The spelling of 243123454522 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred fifty-four thousand, five hundred twenty-two".