1229431543 has 2 divisors, whose sum is σ = 1229431544. Its totient is φ = 1229431542.

The previous prime is 1229431531. The next prime is 1229431547. The reversal of 1229431543 is 3451349221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1229431543 - 2⁹ = 1229431031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1229431499 and 1229431508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229431547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614715771 + 614715772.

It is an arithmetic number, because the mean of its divisors is an integer number (614715772).

Almost surely, 2^1229431543 is an apocalyptic number.

1229431543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229431543 is an equidigital number, since it uses as much as digits as its factorization.

1229431543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 1229431543 is about 35063.2506051564. The cubic root of 1229431543 is about 1071.2761850992.

The spelling of 1229431543 in words is "one billion, two hundred twenty-nine million, four hundred thirty-one thousand, five hundred forty-three".