442300031 has 16 divisors (see below), whose sum is σ = 474389760. Its totient is φ = 411143040.

The previous prime is 442300013. The next prime is 442300039. The reversal of 442300031 is 130003244.

It is a cyclic number.

It is not a de Polignac number, because 442300031 - 2¹⁸ = 442037887 is a prime.

It is a super-2 number, since 2×442300031² = 391258634845201922, 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 = 442299982 and 442300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442300039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428486 + ... + 429516.

It is an arithmetic number, because the mean of its divisors is an integer number (29649360).

Almost surely, 2^442300031 is an apocalyptic number.

442300031 is a deficient number, since it is larger than the sum of its proper divisors (32089729).

442300031 is a wasteful number, since it uses less digits than its factorization.

442300031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454.

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

The square root of 442300031 is about 21030.9303408099. The cubic root of 442300031 is about 761.9134787626.

Adding to 442300031 its reverse (130003244), we get a palindrome (572303275).

The spelling of 442300031 in words is "four hundred forty-two million, three hundred thousand, thirty-one".