1143232379 has 2 divisors, whose sum is σ = 1143232380. Its totient is φ = 1143232378.

The previous prime is 1143232331. The next prime is 1143232459. The reversal of 1143232379 is 9732323411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143232379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143232309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571616189 + 571616190.

It is an arithmetic number, because the mean of its divisors is an integer number (571616190).

Almost surely, 2^1143232379 is an apocalyptic number.

1143232379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143232379 is an equidigital number, since it uses as much as digits as its factorization.

1143232379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 1143232379 is about 33811.7195510669. The cubic root of 1143232379 is about 1045.6303299419.

The spelling of 1143232379 in words is "one billion, one hundred forty-three million, two hundred thirty-two thousand, three hundred seventy-nine".