1103312543 has 2 divisors, whose sum is σ = 1103312544. Its totient is φ = 1103312542.

The previous prime is 1103312527. The next prime is 1103312591. The reversal of 1103312543 is 3452133011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1103312543 - 2⁴ = 1103312527 is a prime.

It is a super-2 number, since 2×1103312543² = 2434597135082253698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103312513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551656271 + 551656272.

It is an arithmetic number, because the mean of its divisors is an integer number (551656272).

Almost surely, 2^1103312543 is an apocalyptic number.

1103312543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103312543 is an equidigital number, since it uses as much as digits as its factorization.

1103312543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1103312543 is about 33216.1488285442. The cubic root of 1103312543 is about 1033.3152807691.

Adding to 1103312543 its reverse (3452133011), we get a palindrome (4555445554).

The spelling of 1103312543 in words is "one billion, one hundred three million, three hundred twelve thousand, five hundred forty-three".