242493831 has 42 divisors (see below), whose sum is σ = 386554752. Its totient is φ = 152020800.

The previous prime is 242493817. The next prime is 242493841. The reversal of 242493831 is 138394242.

242493831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242493831 - 2¹⁷ = 242362759 is a prime.

It is a super-2 number, since 2×242493831² = 117606516146113122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242493841) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 210106 + ... + 211256.

Almost surely, 2^242493831 is an apocalyptic number.

242493831 is a deficient number, since it is larger than the sum of its proper divisors (144060921).

242493831 is an equidigital number, since it uses as much as digits as its factorization.

242493831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1171 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 242493831 is about 15572.2134264850. The cubic root of 242493831 is about 623.5915642648.

The spelling of 242493831 in words is "two hundred forty-two million, four hundred ninety-three thousand, eight hundred thirty-one".