1143321413 has 8 divisors (see below), whose sum is σ = 1231553400. Its totient is φ = 1055130048.

The previous prime is 1143321407. The next prime is 1143321419. The reversal of 1143321413 is 3141233411.

It is an interprime number because it is at equal distance from previous prime (1143321407) and next prime (1143321419).

It can be written as a sum of positive squares in 4 ways, for example, as 50225569 + 1093095844 = 7087^2 + 33062^2 .

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 1143321413 - 2⁴ = 1143321397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143321419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74483 + ... + 88511.

It is an arithmetic number, because the mean of its divisors is an integer number (153944175).

Almost surely, 2^1143321413 is an apocalyptic number.

1143321413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1143321413 is a deficient number, since it is larger than the sum of its proper divisors (88231987).

1143321413 is a wasteful number, since it uses less digits than its factorization.

1143321413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20311.

The product of its digits is 864, while the sum is 23.

The square root of 1143321413 is about 33813.0361399269. The cubic root of 1143321413 is about 1045.6574735148.

Adding to 1143321413 its reverse (3141233411), we get a palindrome (4284554824).

The spelling of 1143321413 in words is "one billion, one hundred forty-three million, three hundred twenty-one thousand, four hundred thirteen".