445345331 has 2 divisors, whose sum is σ = 445345332. Its totient is φ = 445345330.

The previous prime is 445345301. The next prime is 445345339. The reversal of 445345331 is 133543544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445345331 - 2⁶ = 445345267 is a prime.

It is a super-2 number, since 2×445345331² = 396664927686999122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445345339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222672665 + 222672666.

It is an arithmetic number, because the mean of its divisors is an integer number (222672666).

Almost surely, 2^445345331 is an apocalyptic number.

445345331 is a deficient number, since it is larger than the sum of its proper divisors (1).

445345331 is an equidigital number, since it uses as much as digits as its factorization.

445345331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 32.

The square root of 445345331 is about 21103.2066520707. The cubic root of 445345331 is about 763.6581092039.

Adding to 445345331 its reverse (133543544), we get a palindrome (578888875).

The spelling of 445345331 in words is "four hundred forty-five million, three hundred forty-five thousand, three hundred thirty-one".