1443040313 has 12 divisors (see below), whose sum is σ = 1708165284. Its totient is φ = 1210941600.

The previous prime is 1443040303. The next prime is 1443040321. The reversal of 1443040313 is 3130403441.

It can be written as a sum of positive squares in 2 ways, for example, as 159466384 + 1283573929 = 12628^2 + 35827^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1443040313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443040303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 457118 + ... + 460263.

It is an arithmetic number, because the mean of its divisors is an integer number (142347107).

Almost surely, 2^1443040313 is an apocalyptic number.

1443040313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1443040313 is a deficient number, since it is larger than the sum of its proper divisors (265124971).

1443040313 is a wasteful number, since it uses less digits than its factorization.

1443040313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917416 (or 917405 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1443040313 is about 37987.3704407136. The cubic root of 1443040313 is about 1130.0374104617.

Adding to 1443040313 its reverse (3130403441), we get a palindrome (4573443754).

The spelling of 1443040313 in words is "one billion, four hundred forty-three million, forty thousand, three hundred thirteen".