243130430252111 has 4 divisors (see below), whose sum is σ = 244586301092112. Its totient is φ = 241674559412112.

The previous prime is 243130430252089. The next prime is 243130430252123. The reversal of 243130430252111 is 111252034031342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243130430252111 - 2²⁶ = 243130363143247 is a prime.

It is a super-2 number, since 2×243130430252111² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130430252191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727935419750 + ... + 727935420083.

It is an arithmetic number, because the mean of its divisors is an integer number (61146575273028).

Almost surely, 2^{243130430252111} is an apocalyptic number.

243130430252111 is a deficient number, since it is larger than the sum of its proper divisors (1455870840001).

243130430252111 is a wasteful number, since it uses less digits than its factorization.

243130430252111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455870840000.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 243130430252111 its reverse (111252034031342), we get a palindrome (354382464283453).

The spelling of 243130430252111 in words is "two hundred forty-three trillion, one hundred thirty billion, four hundred thirty million, two hundred fifty-two thousand, one hundred eleven".