442232031 has 4 divisors (see below), whose sum is σ = 589642712. Its totient is φ = 294821352.

The previous prime is 442232009. The next prime is 442232047. The reversal of 442232031 is 130232244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442232031 - 2⁹ = 442231519 is a prime.

It is a super-2 number, since 2×442232031² = 391138338484769922, 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 = 442231989 and 442232007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442232731) 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, 73705336 + ... + 73705341.

It is an arithmetic number, because the mean of its divisors is an integer number (147410678).

Almost surely, 2^442232031 is an apocalyptic number.

442232031 is a deficient number, since it is larger than the sum of its proper divisors (147410681).

442232031 is a wasteful number, since it uses less digits than its factorization.

442232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147410680.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 442232031 is about 21029.3136121938. The cubic root of 442232031 is about 761.8744307798.

Adding to 442232031 its reverse (130232244), we get a palindrome (572464275).

The spelling of 442232031 in words is "four hundred forty-two million, two hundred thirty-two thousand, thirty-one".