243331401 has 8 divisors (see below), whose sum is σ = 324573120. Its totient is φ = 162155312.

The previous prime is 243331391. The next prime is 243331409. The reversal of 243331401 is 104133342.

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

It is a cyclic number.

It is not a de Polignac number, because 243331401 - 2⁹ = 243330889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243331409) 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, 6981 + ... + 23138.

It is an arithmetic number, because the mean of its divisors is an integer number (40571640).

Almost surely, 2^243331401 is an apocalyptic number.

It is an amenable number.

243331401 is a deficient number, since it is larger than the sum of its proper divisors (81241719).

243331401 is a wasteful number, since it uses less digits than its factorization.

243331401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32815.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243331401 is about 15599.0833384529. The cubic root of 243331401 is about 624.3086978307.

Adding to 243331401 its reverse (104133342), we get a palindrome (347464743).

The spelling of 243331401 in words is "two hundred forty-three million, three hundred thirty-one thousand, four hundred one".