242131231 has 8 divisors (see below), whose sum is σ = 255041280. Its totient is φ = 229237848.

The previous prime is 242131223. The next prime is 242131259. The reversal of 242131231 is 132131242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242131231 - 2³ = 242131223 is a prime.

It is a super-2 number, since 2×242131231² = 117255066051150722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242131199 and 242131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242131261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35370 + ... + 41656.

It is an arithmetic number, because the mean of its divisors is an integer number (31880160).

Almost surely, 2^242131231 is an apocalyptic number.

242131231 is a deficient number, since it is larger than the sum of its proper divisors (12910049).

242131231 is a wasteful number, since it uses less digits than its factorization.

242131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333.

The product of its digits is 288, while the sum is 19.

The square root of 242131231 is about 15560.5665385294. The cubic root of 242131231 is about 623.2805912715.

Adding to 242131231 its reverse (132131242), we get a palindrome (374262473).

The spelling of 242131231 in words is "two hundred forty-two million, one hundred thirty-one thousand, two hundred thirty-one".