1143203113 has 8 divisors (see below), whose sum is σ = 1273595400. Its totient is φ = 1018875648.

The previous prime is 1143203101. The next prime is 1143203129. The reversal of 1143203113 is 3113023411.

It can be written as a sum of positive squares in 4 ways, for example, as 15116544 + 1128086569 = 3888^2 + 33587^2 .

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 1143203113 - 2²⁵ = 1109648681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143203183) 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, 1515808 + ... + 1516561.

It is an arithmetic number, because the mean of its divisors is an integer number (159199425).

Almost surely, 2^1143203113 is an apocalyptic number.

1143203113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1143203113 is a deficient number, since it is larger than the sum of its proper divisors (130392287).

1143203113 is a wasteful number, since it uses less digits than its factorization.

1143203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032411.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1143203113 is about 33811.2867693615. The cubic root of 1143203113 is about 1045.6214073819.

Adding to 1143203113 its reverse (3113023411), we get a palindrome (4256226524).

The spelling of 1143203113 in words is "one billion, one hundred forty-three million, two hundred three thousand, one hundred thirteen".