243310401 has 6 divisors (see below), whose sum is σ = 351448370. Its totient is φ = 162206928.

The previous prime is 243310393. The next prime is 243310427. The reversal of 243310401 is 104013342.

It can be written as a sum of positive squares in only one way, i.e., 213890625 + 29419776 = 14625^2 + 5424^2 .

It is not a de Polignac number, because 243310401 - 2³ = 243310393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243310451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13517236 + ... + 13517253.

Almost surely, 2^243310401 is an apocalyptic number.

It is an amenable number.

243310401 is a deficient number, since it is larger than the sum of its proper divisors (108137969).

243310401 is a wasteful number, since it uses less digits than its factorization.

243310401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27034495 (or 27034492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 243310401 is about 15598.4102074538. The cubic root of 243310401 is about 624.2907376061.

Adding to 243310401 its reverse (104013342), we get a palindrome (347323743).

The spelling of 243310401 in words is "two hundred forty-three million, three hundred ten thousand, four hundred one".