1143232331 has 2 divisors, whose sum is σ = 1143232332. Its totient is φ = 1143232330.

The previous prime is 1143232309. The next prime is 1143232379. The reversal of 1143232331 is 1332323411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143232331 - 2²² = 1139038027 is a prime.

It is a super-2 number, since 2×1143232331² = 2613960325287387122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143232297 and 1143232306.

It is not a weakly prime, because it can be changed into another prime (1143232931) 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 as a sum of consecutive naturals, namely, 571616165 + 571616166.

It is an arithmetic number, because the mean of its divisors is an integer number (571616166).

Almost surely, 2^1143232331 is an apocalyptic number.

1143232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143232331 is an equidigital number, since it uses as much as digits as its factorization.

1143232331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 1143232331 is about 33811.7188412538. The cubic root of 1143232331 is about 1045.6303153079.

Adding to 1143232331 its reverse (1332323411), we get a palindrome (2475555742).

The spelling of 1143232331 in words is "one billion, one hundred forty-three million, two hundred thirty-two thousand, three hundred thirty-one".