242222231 has 4 divisors (see below), whose sum is σ = 243280200. Its totient is φ = 241164264.

The previous prime is 242222209. The next prime is 242222237. The reversal of 242222231 is 132222242.

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 242222231 - 2¹⁰ = 242221207 is a prime.

It is a super-2 number, since 2×242222231² = 117343218381234722, which 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 (242222237) 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, 528641 + ... + 529098.

It is an arithmetic number, because the mean of its divisors is an integer number (60820050).

Almost surely, 2^242222231 is an apocalyptic number.

242222231 is a deficient number, since it is larger than the sum of its proper divisors (1057969).

242222231 is a wasteful number, since it uses less digits than its factorization.

242222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057968.

The product of its digits is 768, while the sum is 20.

The square root of 242222231 is about 15563.4903219040. The cubic root of 242222231 is about 623.3586638516.

Adding to 242222231 its reverse (132222242), we get a palindrome (374444473).

The spelling of 242222231 in words is "two hundred forty-two million, two hundred twenty-two thousand, two hundred thirty-one".