243121132113 has 16 divisors (see below), whose sum is σ = 325438248960. Its totient is φ = 161442553424.

The previous prime is 243121132073. The next prime is 243121132117. The reversal of 243121132113 is 311231121342.

It is a cyclic number.

It is not a de Polignac number, because 243121132113 - 2⁶ = 243121132049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243121132117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7510120 + ... + 7542422.

It is an arithmetic number, because the mean of its divisors is an integer number (20339890560).

Almost surely, 2^243121132113 is an apocalyptic number.

It is an amenable number.

243121132113 is a deficient number, since it is larger than the sum of its proper divisors (82317116847).

243121132113 is a wasteful number, since it uses less digits than its factorization.

243121132113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42108.

The product of its digits is 864, while the sum is 24.

Adding to 243121132113 its reverse (311231121342), we get a palindrome (554352253455).

The spelling of 243121132113 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred thirteen".