243155033401 has 8 divisors (see below), whose sum is σ = 282039101120. Its totient is φ = 205307874288.

The previous prime is 243155033357. The next prime is 243155033413. The reversal of 243155033401 is 104330551342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243155033401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243155033431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259226646 + ... + 259227583.

It is an arithmetic number, because the mean of its divisors is an integer number (35254887640).

Almost surely, 2^243155033401 is an apocalyptic number.

It is an amenable number.

243155033401 is a deficient number, since it is larger than the sum of its proper divisors (38884067719).

243155033401 is an equidigital number, since it uses as much as digits as its factorization.

243155033401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518454303.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 243155033401 its reverse (104330551342), we get a palindrome (347485584743).

The spelling of 243155033401 in words is "two hundred forty-three billion, one hundred fifty-five million, thirty-three thousand, four hundred one".