445216131 has 24 divisors (see below), whose sum is σ = 649059840. Its totient is φ = 294070896.

The previous prime is 445216103. The next prime is 445216147. The reversal of 445216131 is 131612544.

It is a happy number.

445216131 is a `hidden beast` number, since 4 + 4 + 521 + 6 + 131 = 666.

It is not a de Polignac number, because 445216131 - 2⁵ = 445216099 is a prime.

It is a super-2 number, since 2×445216131² = 396434806605218322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445216095 and 445216104.

It is not an unprimeable number, because it can be changed into a prime (445216231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 565320 + ... + 566106.

It is an arithmetic number, because the mean of its divisors is an integer number (27044160).

Almost surely, 2^445216131 is an apocalyptic number.

445216131 is a deficient number, since it is larger than the sum of its proper divisors (203843709).

445216131 is a wasteful number, since it uses less digits than its factorization.

445216131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1292 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 445216131 is about 21100.1452838600. The cubic root of 445216131 is about 763.5842532816.

Adding to 445216131 its reverse (131612544), we get a palindrome (576828675).

The spelling of 445216131 in words is "four hundred forty-five million, two hundred sixteen thousand, one hundred thirty-one".