243130131 has 6 divisors (see below), whose sum is σ = 351187980. Its totient is φ = 162086748.

The previous prime is 243130109. The next prime is 243130169. The reversal of 243130131 is 131031342.

It is not a de Polignac number, because 243130131 - 2⁷ = 243130003 is a prime.

It is a super-2 number, since 2×243130131² = 118224521200154322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243130031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13507221 + ... + 13507238.

It is an arithmetic number, because the mean of its divisors is an integer number (58531330).

Almost surely, 2^243130131 is an apocalyptic number.

243130131 is a deficient number, since it is larger than the sum of its proper divisors (108057849).

243130131 is a wasteful number, since it uses less digits than its factorization.

243130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27014465 (or 27014462 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 243130131 is about 15592.6306632332. The cubic root of 243130131 is about 624.1365193780.

Adding to 243130131 its reverse (131031342), we get a palindrome (374161473).

The spelling of 243130131 in words is "two hundred forty-three million, one hundred thirty thousand, one hundred thirty-one".