445322021231 has 16 divisors (see below), whose sum is σ = 451988304768. Its totient is φ = 438688552800.

The previous prime is 445322021227. The next prime is 445322021251. The reversal of 445322021231 is 132120223544.

It is a cyclic number.

It is not a de Polignac number, because 445322021231 - 2² = 445322021227 is a prime.

It is a super-2 number, since 2×445322021231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 445322021194 and 445322021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445322021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46013765 + ... + 46023441.

It is an arithmetic number, because the mean of its divisors is an integer number (28249269048).

Almost surely, 2^445322021231 is an apocalyptic number.

445322021231 is a deficient number, since it is larger than the sum of its proper divisors (6666283537).

445322021231 is an equidigital number, since it uses as much as digits as its factorization.

445322021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11302.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 445322021231 its reverse (132120223544), we get a palindrome (577442244775).

The spelling of 445322021231 in words is "four hundred forty-five billion, three hundred twenty-two million, twenty-one thousand, two hundred thirty-one".