243412931 has 2 divisors, whose sum is σ = 243412932. Its totient is φ = 243412930.

The previous prime is 243412927. The next prime is 243412993. The reversal of 243412931 is 139214342.

243412931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243412931 - 2² = 243412927 is a prime.

It is a super-2 number, since 2×243412931² = 118499709956021522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243412894 and 243412903.

It is not a weakly prime, because it can be changed into another prime (243412831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121706465 + 121706466.

It is an arithmetic number, because the mean of its divisors is an integer number (121706466).

Almost surely, 2^243412931 is an apocalyptic number.

243412931 is a deficient number, since it is larger than the sum of its proper divisors (1).

243412931 is an equidigital number, since it uses as much as digits as its factorization.

243412931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 243412931 is about 15601.6964141724. The cubic root of 243412931 is about 624.3784164725.

It can be divided in two parts, 24341 and 2931, that added together give a palindrome (27272).

The spelling of 243412931 in words is "two hundred forty-three million, four hundred twelve thousand, nine hundred thirty-one".