242403031 has 4 divisors (see below), whose sum is σ = 261049432. Its totient is φ = 223756632.

The previous prime is 242403023. The next prime is 242403059. The reversal of 242403031 is 130304242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242403031 - 2³ = 242403023 is a prime.

It is a super-2 number, since 2×242403031² = 117518458875973922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242403011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9323181 + ... + 9323206.

It is an arithmetic number, because the mean of its divisors is an integer number (65262358).

Almost surely, 2^242403031 is an apocalyptic number.

242403031 is a deficient number, since it is larger than the sum of its proper divisors (18646401).

242403031 is a wasteful number, since it uses less digits than its factorization.

242403031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18646400.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 242403031 is about 15569.2977041355. The cubic root of 242403031 is about 623.5137214836.

Adding to 242403031 its reverse (130304242), we get a palindrome (372707273).

The spelling of 242403031 in words is "two hundred forty-two million, four hundred three thousand, thirty-one".