242531031 has 16 divisors (see below), whose sum is σ = 342689760. Its totient is φ = 152302080.

The previous prime is 242531017. The next prime is 242531033. The reversal of 242531031 is 130135242.

It is not a de Polignac number, because 242531031 - 2⁵ = 242530999 is a prime.

It is a super-2 number, since 2×242531031² = 117642601995845922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242530989 and 242531007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242531033) 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, 30430 + ... + 37563.

It is an arithmetic number, because the mean of its divisors is an integer number (21418110).

Almost surely, 2^242531031 is an apocalyptic number.

242531031 is a deficient number, since it is larger than the sum of its proper divisors (100158729).

242531031 is a wasteful number, since it uses less digits than its factorization.

242531031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68066.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 242531031 is about 15573.4078158892. The cubic root of 242531031 is about 623.6234501895.

Adding to 242531031 its reverse (130135242), we get a palindrome (372666273).

The spelling of 242531031 in words is "two hundred forty-two million, five hundred thirty-one thousand, thirty-one".