242231331 has 32 divisors (see below), whose sum is σ = 345305088. Its totient is φ = 150717600.

The previous prime is 242231309. The next prime is 242231347. The reversal of 242231331 is 133132242.

It is not a de Polignac number, because 242231331 - 2⁹ = 242230819 is a prime.

It is a super-2 number, since 2×242231331² = 117352035436063122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242231298 and 242231307.

It is not an unprimeable number, because it can be changed into a prime (242231131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 697900 + ... + 698246.

It is an arithmetic number, because the mean of its divisors is an integer number (10790784).

Almost surely, 2^242231331 is an apocalyptic number.

242231331 is a deficient number, since it is larger than the sum of its proper divisors (103073757).

242231331 is a wasteful number, since it uses less digits than its factorization.

242231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591.

The product of its digits is 864, while the sum is 21.

The square root of 242231331 is about 15563.7826700324. The cubic root of 242231331 is about 623.3664700341.

Adding to 242231331 its reverse (133132242), we get a palindrome (375363573).

The spelling of 242231331 in words is "two hundred forty-two million, two hundred thirty-one thousand, three hundred thirty-one".