1204315543 has 2 divisors, whose sum is σ = 1204315544. Its totient is φ = 1204315542.

The previous prime is 1204315531. The next prime is 1204315549. The reversal of 1204315543 is 3455134021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1204315543 - 2⁹ = 1204315031 is a prime.

It is a super-2 number, since 2×1204315543² = 2900751854222769698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204315549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602157771 + 602157772.

It is an arithmetic number, because the mean of its divisors is an integer number (602157772).

Almost surely, 2^1204315543 is an apocalyptic number.

1204315543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204315543 is an equidigital number, since it uses as much as digits as its factorization.

1204315543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1204315543 is about 34703.2497469617. The cubic root of 1204315543 is about 1063.9309198065.

Adding to 1204315543 its reverse (3455134021), we get a palindrome (4659449564).

The spelling of 1204315543 in words is "one billion, two hundred four million, three hundred fifteen thousand, five hundred forty-three".