243121233130 has 8 divisors (see below), whose sum is σ = 437618219652. Its totient is φ = 97248493248.

The previous prime is 243121233127. The next prime is 243121233133. The reversal of 243121233130 is 31332121342.

It is an interprime number because it is at equal distance from previous prime (243121233127) and next prime (243121233133).

It can be written as a sum of positive squares in 2 ways, for example, as 235983179961 + 7138053169 = 485781^2 + 84487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 243121233095 and 243121233104.

It is not an unprimeable number, because it can be changed into a prime (243121233133) 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, 12156061647 + ... + 12156061666.

Almost surely, 2^243121233130 is an apocalyptic number.

243121233130 is a deficient number, since it is larger than the sum of its proper divisors (194496986522).

243121233130 is a wasteful number, since it uses less digits than its factorization.

243121233130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24312123320.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 243121233130 its reverse (31332121342), we get a palindrome (274453354472).

The spelling of 243121233130 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty".