442063231 has 2 divisors, whose sum is σ = 442063232. Its totient is φ = 442063230.

The previous prime is 442063217. The next prime is 442063249. The reversal of 442063231 is 132360244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442063231 - 2⁵ = 442063199 is a prime.

It is a super-2 number, since 2×442063231² = 390839800404318722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442063196 and 442063205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442063201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221031615 + 221031616.

It is an arithmetic number, because the mean of its divisors is an integer number (221031616).

Almost surely, 2^442063231 is an apocalyptic number.

442063231 is a deficient number, since it is larger than the sum of its proper divisors (1).

442063231 is an equidigital number, since it uses as much as digits as its factorization.

442063231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 442063231 is about 21025.2997838319. The cubic root of 442063231 is about 761.7774826009. Note that the first 3 decimals are identical.

The spelling of 442063231 in words is "four hundred forty-two million, sixty-three thousand, two hundred thirty-one".