242220331 has 4 divisors (see below), whose sum is σ = 242421232. Its totient is φ = 242019432.

The previous prime is 242220317. The next prime is 242220361. The reversal of 242220331 is 133022242.

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 242220331 - 2⁵ = 242220299 is a prime.

It is a super-2 number, since 2×242220331² = 117341377499499122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242220299 and 242220308.

It is not an unprimeable number, because it can be changed into a prime (242220361) 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, 98631 + ... + 101056.

It is an arithmetic number, because the mean of its divisors is an integer number (60605308).

Almost surely, 2^242220331 is an apocalyptic number.

242220331 is a deficient number, since it is larger than the sum of its proper divisors (200901).

242220331 is a wasteful number, since it uses less digits than its factorization.

242220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200900.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 242220331 is about 15563.4292814919. The cubic root of 242220331 is about 623.3570339646.

Adding to 242220331 its reverse (133022242), we get a palindrome (375242573).

The spelling of 242220331 in words is "two hundred forty-two million, two hundred twenty thousand, three hundred thirty-one".