242653123531 has 12 divisors (see below), whose sum is σ = 300290933712. Its totient is φ = 191989283616.

The previous prime is 242653123529. The next prime is 242653123541. The reversal of 242653123531 is 135321356242.

It is not a de Polignac number, because 242653123531 - 2¹ = 242653123529 is a prime.

It is a super-2 number, since 2×242653123531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242653123511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102557196 + ... + 102559561.

It is an arithmetic number, because the mean of its divisors is an integer number (25024244476).

Almost surely, 2^242653123531 is an apocalyptic number.

242653123531 is a deficient number, since it is larger than the sum of its proper divisors (57637810181).

242653123531 is a wasteful number, since it uses less digits than its factorization.

242653123531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205116790 (or 205116777 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

Adding to 242653123531 its reverse (135321356242), we get a palindrome (377974479773).

The spelling of 242653123531 in words is "two hundred forty-two billion, six hundred fifty-three million, one hundred twenty-three thousand, five hundred thirty-one".