243121123030 has 64 divisors (see below), whose sum is σ = 462736281600. Its totient is φ = 91781015040.

The previous prime is 243121123013. The next prime is 243121123057. The reversal of 243121123030 is 30321121342.

It is a junction number, because it is equal to n+sod(n) for n = 243121122992 and 243121123010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34137870 + ... + 34144990.

It is an arithmetic number, because the mean of its divisors is an integer number (7230254400).

Almost surely, 2^243121123030 is an apocalyptic number.

243121123030 is a deficient number, since it is larger than the sum of its proper divisors (219615158570).

243121123030 is a wasteful number, since it uses less digits than its factorization.

243121123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 243121123030 its reverse (30321121342), we get a palindrome (273442244372).

The spelling of 243121123030 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred twenty-three thousand, thirty".