445011331 has 4 divisors (see below), whose sum is σ = 468433000. Its totient is φ = 421589664.

The previous prime is 445011313. The next prime is 445011341. The reversal of 445011331 is 133110544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445011331 - 2¹¹ = 445009283 is a prime.

It is a super-3 number, since 3×445011331³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445011341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11710806 + ... + 11710843.

It is an arithmetic number, because the mean of its divisors is an integer number (117108250).

Almost surely, 2^445011331 is an apocalyptic number.

445011331 is a deficient number, since it is larger than the sum of its proper divisors (23421669).

445011331 is a wasteful number, since it uses less digits than its factorization.

445011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23421668.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 445011331 is about 21095.2916784765. The cubic root of 445011331 is about 763.4671520739.

Adding to 445011331 its reverse (133110544), we get a palindrome (578121875).

The spelling of 445011331 in words is "four hundred forty-five million, eleven thousand, three hundred thirty-one".