243121430130 has 32 divisors (see below), whose sum is σ = 583530200064. Its totient is φ = 64828073856.

The previous prime is 243121430059. The next prime is 243121430177. The reversal of 243121430130 is 31034121342.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243121430130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203439 + ... + 726381.

It is an arithmetic number, because the mean of its divisors is an integer number (18235318752).

Almost surely, 2^243121430130 is an apocalyptic number.

243121430130 is an abundant number, since it is smaller than the sum of its proper divisors (340408769934).

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

243121430130 is a wasteful number, since it uses less digits than its factorization.

243121430130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538450.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 243121430130 its reverse (31034121342), we get a palindrome (274155551472).

The spelling of 243121430130 in words is "two hundred forty-three billion, one hundred twenty-one million, four hundred thirty thousand, one hundred thirty".