1143344331 has 12 divisors (see below), whose sum is σ = 1655265040. Its totient is φ = 760490640.

The previous prime is 1143344317. The next prime is 1143344353. The reversal of 1143344331 is 1334433411.

It is not a de Polignac number, because 1143344331 - 2¹⁰ = 1143343307 is a prime.

It is a super-2 number, since 2×1143344331² = 2614472518459675122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143344295 and 1143344304.

It is not an unprimeable number, because it can be changed into a prime (1143344381) 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, 140740 + ... + 148641.

Almost surely, 2^1143344331 is an apocalyptic number.

1143344331 is a deficient number, since it is larger than the sum of its proper divisors (511920709).

1143344331 is a wasteful number, since it uses less digits than its factorization.

1143344331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289826 (or 289823 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 1143344331 is about 33813.3750311914. The cubic root of 1143344331 is about 1045.6644602400.

Adding to 1143344331 its reverse (1334433411), we get a palindrome (2477777742).

The spelling of 1143344331 in words is "one billion, one hundred forty-three million, three hundred forty-four thousand, three hundred thirty-one".