445003131 has 4 divisors (see below), whose sum is σ = 593337512. Its totient is φ = 296668752.

The previous prime is 445003093. The next prime is 445003133. The reversal of 445003131 is 131300544.

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

It is not a de Polignac number, because 445003131 - 2⁹ = 445002619 is a prime.

It is a super-2 number, since 2×445003131² = 396055573199606322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445003098 and 445003107.

It is not an unprimeable number, because it can be changed into a prime (445003133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74167186 + ... + 74167191.

It is an arithmetic number, because the mean of its divisors is an integer number (148334378).

Almost surely, 2^445003131 is an apocalyptic number.

445003131 is a deficient number, since it is larger than the sum of its proper divisors (148334381).

445003131 is a wasteful number, since it uses less digits than its factorization.

445003131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148334380.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 445003131 is about 21095.0973214157. The cubic root of 445003131 is about 763.4624627034.

Adding to 445003131 its reverse (131300544), we get a palindrome (576303675).

The spelling of 445003131 in words is "four hundred forty-five million, three thousand, one hundred thirty-one".