242203540631 has 4 divisors (see below), whose sum is σ = 260834582232. Its totient is φ = 223572499032.

The previous prime is 242203540613. The next prime is 242203540639. The reversal of 242203540631 is 136045302242.

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 242203540631 - 2²² = 242199346327 is a prime.

It is a super-2 number, since 2×242203540631² (a number of 24 digits) 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 (242203540639) 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, 9315520781 + ... + 9315520806.

It is an arithmetic number, because the mean of its divisors is an integer number (65208645558).

Almost surely, 2^242203540631 is an apocalyptic number.

242203540631 is a deficient number, since it is larger than the sum of its proper divisors (18631041601).

242203540631 is a wasteful number, since it uses less digits than its factorization.

242203540631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18631041600.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 242203540631 its reverse (136045302242), we get a palindrome (378248842873).

The spelling of 242203540631 in words is "two hundred forty-two billion, two hundred three million, five hundred forty thousand, six hundred thirty-one".