442016831 has 2 divisors, whose sum is σ = 442016832. Its totient is φ = 442016830.

The previous prime is 442016761. The next prime is 442016857. The reversal of 442016831 is 138610244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442016831 is a prime.

It is a super-2 number, since 2×442016831² = 390757757774565122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442016794 and 442016803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442016891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221008415 + 221008416.

It is an arithmetic number, because the mean of its divisors is an integer number (221008416).

Almost surely, 2^442016831 is an apocalyptic number.

442016831 is a deficient number, since it is larger than the sum of its proper divisors (1).

442016831 is an equidigital number, since it uses as much as digits as its factorization.

442016831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 442016831 is about 21024.1963223330. The cubic root of 442016831 is about 761.7508290143.

The spelling of 442016831 in words is "four hundred forty-two million, sixteen thousand, eight hundred thirty-one".