1445144331 has 8 divisors (see below), whose sum is σ = 1934922240. Its totient is φ = 959397992.

The previous prime is 1445144321. The next prime is 1445144333. The reversal of 1445144331 is 1334415441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1445144331 - 2¹⁹ = 1444620043 is a prime.

It is a super-2 number, since 2×1445144331² = 4176884274842875122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445144333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007055 + ... + 1008488.

It is an arithmetic number, because the mean of its divisors is an integer number (241865280).

Almost surely, 2^1445144331 is an apocalyptic number.

1445144331 is a deficient number, since it is larger than the sum of its proper divisors (489777909).

1445144331 is a wasteful number, since it uses less digits than its factorization.

1445144331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015785.

The product of its digits is 11520, while the sum is 30.

The square root of 1445144331 is about 38015.0540049597. The cubic root of 1445144331 is about 1130.5863589577.

Adding to 1445144331 its reverse (1334415441), we get a palindrome (2779559772).

The spelling of 1445144331 in words is "one billion, four hundred forty-five million, one hundred forty-four thousand, three hundred thirty-one".