445445130331 has 4 divisors (see below), whose sum is σ = 445501645272. Its totient is φ = 445388615392.

The previous prime is 445445130329. The next prime is 445445130337. The reversal of 445445130331 is 133031544544.

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 445445130331 - 2¹ = 445445130329 is a prime.

It is a super-2 number, since 2×445445130331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445445130337) 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, 28245646 + ... + 28261411.

It is an arithmetic number, because the mean of its divisors is an integer number (111375411318).

Almost surely, 2^445445130331 is an apocalyptic number.

445445130331 is a deficient number, since it is larger than the sum of its proper divisors (56514941).

445445130331 is an equidigital number, since it uses as much as digits as its factorization.

445445130331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56514940.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 445445130331 its reverse (133031544544), we get a palindrome (578476674875).

The spelling of 445445130331 in words is "four hundred forty-five billion, four hundred forty-five million, one hundred thirty thousand, three hundred thirty-one".