243431130 has 16 divisors (see below), whose sum is σ = 584234784. Its totient is φ = 64914960.

The previous prime is 243431113. The next prime is 243431137. The reversal of 243431130 is 31134342.

It is a junction number, because it is equal to n+sod(n) for n = 243431097 and 243431106.

It is not an unprimeable number, because it can be changed into a prime (243431137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4057156 + ... + 4057215.

It is an arithmetic number, because the mean of its divisors is an integer number (36514674).

Almost surely, 2^243431130 is an apocalyptic number.

243431130 is an abundant number, since it is smaller than the sum of its proper divisors (340803654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243431130 is a wasteful number, since it uses less digits than its factorization.

243431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114381.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243431130 is about 15602.2796411294. The cubic root of 243431130 is about 624.3939768341.

Adding to 243431130 its reverse (31134342), we get a palindrome (274565472).

The spelling of 243431130 in words is "two hundred forty-three million, four hundred thirty-one thousand, one hundred thirty".