42232031 has 4 divisors (see below), whose sum is σ = 42540432. Its totient is φ = 41923632.

The previous prime is 42231989. The next prime is 42232037. The reversal of 42232031 is 13023224.

42232031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42232031 - 2⁶ = 42231967 is a prime.

It is a super-2 number, since 2×42232031² = 3567088884769922, 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 (42232037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153995 + ... + 154268.

It is an arithmetic number, because the mean of its divisors is an integer number (10635108).

Almost surely, 2^42232031 is an apocalyptic number.

42232031 is a deficient number, since it is larger than the sum of its proper divisors (308401).

42232031 is a wasteful number, since it uses less digits than its factorization.

42232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308400.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42232031 is about 6498.6176222332. The cubic root of 42232031 is about 348.2416051340.

Adding to 42232031 its reverse (13023224), we get a palindrome (55255255).

The spelling of 42232031 in words is "forty-two million, two hundred thirty-two thousand, thirty-one".