243132331051 has 16 divisors (see below), whose sum is σ = 257574473728. Its totient is φ = 229135132800.

The previous prime is 243132331033. The next prime is 243132331067. The reversal of 243132331051 is 150133231342.

It is a cyclic number.

It is not a de Polignac number, because 243132331051 - 2¹⁹ = 243131806763 is a prime.

It is a super-2 number, since 2×243132331051² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243132331031) 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, 178606 + ... + 719836.

It is an arithmetic number, because the mean of its divisors is an integer number (16098404608).

Almost surely, 2^243132331051 is an apocalyptic number.

243132331051 is a deficient number, since it is larger than the sum of its proper divisors (14442142677).

243132331051 is a wasteful number, since it uses less digits than its factorization.

243132331051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541642.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 243132331051 its reverse (150133231342), we get a palindrome (393265562393).

The spelling of 243132331051 in words is "two hundred forty-three billion, one hundred thirty-two million, three hundred thirty-one thousand, fifty-one".