243382931 has 16 divisors (see below), whose sum is σ = 281789280. Its totient is φ = 207751680.

The previous prime is 243382921. The next prime is 243382957. The reversal of 243382931 is 139283342.

243382931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 243382931 - 2¹⁰ = 243381907 is a prime.

It is a super-2 number, since 2×243382931² = 118470502204301522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243382891 and 243382900.

It is not an unprimeable number, because it can be changed into a prime (243382921) 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, 93905 + ... + 96461.

It is an arithmetic number, because the mean of its divisors is an integer number (17611830).

Almost surely, 2^243382931 is an apocalyptic number.

243382931 is a deficient number, since it is larger than the sum of its proper divisors (38406349).

243382931 is a wasteful number, since it uses less digits than its factorization.

243382931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094.

The product of its digits is 31104, while the sum is 35.

The square root of 243382931 is about 15600.7349506361. The cubic root of 243382931 is about 624.3527644225.

The spelling of 243382931 in words is "two hundred forty-three million, three hundred eighty-two thousand, nine hundred thirty-one".