243201014531 has 16 divisors (see below), whose sum is σ = 248109416448. Its totient is φ = 238338158400.

The previous prime is 243201014489. The next prime is 243201014587. The reversal of 243201014531 is 135410102342.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243201014531 is a prime.

It is a super-2 number, since 2×243201014531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243201014531.

It is not an unprimeable number, because it can be changed into a prime (243201014591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12636686 + ... + 12655916.

It is an arithmetic number, because the mean of its divisors is an integer number (15506838528).

Almost surely, 2^243201014531 is an apocalyptic number.

243201014531 is a deficient number, since it is larger than the sum of its proper divisors (4908401917).

243201014531 is a wasteful number, since it uses less digits than its factorization.

243201014531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243201014531 its reverse (135410102342), we get a palindrome (378611116873).

The spelling of 243201014531 in words is "two hundred forty-three billion, two hundred one million, fourteen thousand, five hundred thirty-one".