42230331 has 72 divisors (see below), whose sum is σ = 76490960. Its totient is φ = 22239360.

The previous prime is 42230327. The next prime is 42230381. The reversal of 42230331 is 13303224.

It is not a de Polignac number, because 42230331 - 2² = 42230327 is a prime.

It is a super-2 number, since 2×42230331² = 3566801712739122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42230381) 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 71 ways as a sum of consecutive naturals, for example, 268905 + ... + 269061.

Almost surely, 2^42230331 is an apocalyptic number.

42230331 is a deficient number, since it is larger than the sum of its proper divisors (34260629).

42230331 is a wasteful number, since it uses less digits than its factorization.

42230331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42230331 is about 6498.4868238691. The cubic root of 42230331 is about 348.2369323879.

Adding to 42230331 its reverse (13303224), we get a palindrome (55533555).

The spelling of 42230331 in words is "forty-two million, two hundred thirty thousand, three hundred thirty-one".