443140331 has 2 divisors, whose sum is σ = 443140332. Its totient is φ = 443140330.

The previous prime is 443140303. The next prime is 443140391. The reversal of 443140331 is 133041344.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443140331 is a prime.

It is a super-2 number, since 2×443140331² = 392746705917579122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 443140297 and 443140306.

It is not a weakly prime, because it can be changed into another prime (443140391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221570165 + 221570166.

It is an arithmetic number, because the mean of its divisors is an integer number (221570166).

Almost surely, 2^443140331 is an apocalyptic number.

443140331 is a deficient number, since it is larger than the sum of its proper divisors (1).

443140331 is an equidigital number, since it uses as much as digits as its factorization.

443140331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 443140331 is about 21050.8985793956. The cubic root of 443140331 is about 762.3956784987.

Adding to 443140331 its reverse (133041344), we get a palindrome (576181675).

The spelling of 443140331 in words is "four hundred forty-three million, one hundred forty thousand, three hundred thirty-one".