242531023 has 4 divisors (see below), whose sum is σ = 277178320. Its totient is φ = 207883728.

The previous prime is 242531017. The next prime is 242531033. The reversal of 242531023 is 320135242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242531023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242530985 and 242531003.

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 3 ways as a sum of consecutive naturals, for example, 17323638 + ... + 17323651.

It is an arithmetic number, because the mean of its divisors is an integer number (69294580).

Almost surely, 2^242531023 is an apocalyptic number.

242531023 is a deficient number, since it is larger than the sum of its proper divisors (34647297).

242531023 is an equidigital number, since it uses as much as digits as its factorization.

242531023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34647296.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 242531023 is about 15573.4075590411. The cubic root of 242531023 is about 623.6234433327.

Adding to 242531023 its reverse (320135242), we get a palindrome (562666265).

The spelling of 242531023 in words is "two hundred forty-two million, five hundred thirty-one thousand, twenty-three".