1445452331 has 2 divisors, whose sum is σ = 1445452332. Its totient is φ = 1445452330.

The previous prime is 1445452321. The next prime is 1445452343. The reversal of 1445452331 is 1332545441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445452331 is a prime.

It is a super-2 number, since 2×1445452331² = 4178664882386667122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1445452321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722726165 + 722726166.

It is an arithmetic number, because the mean of its divisors is an integer number (722726166).

Almost surely, 2^1445452331 is an apocalyptic number.

1445452331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445452331 is an equidigital number, since it uses as much as digits as its factorization.

1445452331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 32.

The square root of 1445452331 is about 38019.1048158686. The cubic root of 1445452331 is about 1130.6666729341. Note that the first 4 decimals are identical.

Adding to 1445452331 its reverse (1332545441), we get a palindrome (2777997772).

The spelling of 1445452331 in words is "one billion, four hundred forty-five million, four hundred fifty-two thousand, three hundred thirty-one".