243121245320 has 32 divisors (see below), whose sum is σ = 552333712320. Its totient is φ = 96304336320.

The previous prime is 243121245287. The next prime is 243121245331. The reversal of 243121245320 is 23542121342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29500886 + ... + 29509125.

It is an arithmetic number, because the mean of its divisors is an integer number (17260428510).

Almost surely, 2^243121245320 is an apocalyptic number.

243121245320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243121245320 is an abundant number, since it is smaller than the sum of its proper divisors (309212467000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121245320 is a wasteful number, since it uses less digits than its factorization.

243121245320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59010125 (or 59010121 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 243121245320 its reverse (23542121342), we get a palindrome (266663366662).

The spelling of 243121245320 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, three hundred twenty".