1143143331 has 8 divisors (see below), whose sum is σ = 1662753984. Its totient is φ = 692814120.

The previous prime is 1143143203. The next prime is 1143143333. The reversal of 1143143331 is 1333413411.

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

It is not a de Polignac number, because 1143143331 - 2⁷ = 1143143203 is a prime.

It is a super-2 number, since 2×1143143331² = 2613553350419551122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143143333) 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, 17320321 + ... + 17320386.

It is an arithmetic number, because the mean of its divisors is an integer number (207844248).

Almost surely, 2^1143143331 is an apocalyptic number.

1143143331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1143143331 is a deficient number, since it is larger than the sum of its proper divisors (519610653).

1143143331 is a wasteful number, since it uses less digits than its factorization.

1143143331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34640721.

The product of its digits is 1296, while the sum is 24.

The square root of 1143143331 is about 33810.4027039016. The cubic root of 1143143331 is about 1045.6031806912.

Adding to 1143143331 its reverse (1333413411), we get a palindrome (2476556742).

The spelling of 1143143331 in words is "one billion, one hundred forty-three million, one hundred forty-three thousand, three hundred thirty-one".