243201015401 has 4 divisors (see below), whose sum is σ = 244811618304. Its totient is φ = 241590412500.

The previous prime is 243201015397. The next prime is 243201015413. The reversal of 243201015401 is 104510102342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243201015401 - 2² = 243201015397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243201015481) 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, 805301225 + ... + 805301526.

It is an arithmetic number, because the mean of its divisors is an integer number (61202904576).

Almost surely, 2^243201015401 is an apocalyptic number.

It is an amenable number.

243201015401 is a deficient number, since it is larger than the sum of its proper divisors (1610602903).

243201015401 is a wasteful number, since it uses less digits than its factorization.

243201015401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610602902.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 243201015401 its reverse (104510102342), we get a palindrome (347711117743).

The spelling of 243201015401 in words is "two hundred forty-three billion, two hundred one million, fifteen thousand, four hundred one".