243052031 has 2 divisors, whose sum is σ = 243052032. Its totient is φ = 243052030.

The previous prime is 243052021. The next prime is 243052057. The reversal of 243052031 is 130250342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243052031 - 2¹⁸ = 242789887 is a prime.

It is a super-2 number, since 2×243052031² = 118148579546449922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 243051994 and 243052012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243052021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121526015 + 121526016.

It is an arithmetic number, because the mean of its divisors is an integer number (121526016).

Almost surely, 2^243052031 is an apocalyptic number.

243052031 is a deficient number, since it is larger than the sum of its proper divisors (1).

243052031 is an equidigital number, since it uses as much as digits as its factorization.

243052031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 243052031 is about 15590.1260738969. The cubic root of 243052031 is about 624.0696823549.

The spelling of 243052031 in words is "two hundred forty-three million, fifty-two thousand, thirty-one".