1103512143 has 32 divisors (see below), whose sum is σ = 1589041152. Its totient is φ = 678643200.

The previous prime is 1103512073. The next prime is 1103512181. The reversal of 1103512143 is 3412153011.

It is not a de Polignac number, because 1103512143 - 2¹² = 1103508047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103519143) 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 in 31 ways as a sum of consecutive naturals, for example, 1340430 + ... + 1341252.

It is an arithmetic number, because the mean of its divisors is an integer number (49657536).

Almost surely, 2^1103512143 is an apocalyptic number.

1103512143 is a deficient number, since it is larger than the sum of its proper divisors (485529009).

1103512143 is a wasteful number, since it uses less digits than its factorization.

1103512143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1103512143 is about 33219.1532553134. The cubic root of 1103512143 is about 1033.3775892827.

Adding to 1103512143 its reverse (3412153011), we get a palindrome (4515665154).

The spelling of 1103512143 in words is "one billion, one hundred three million, five hundred twelve thousand, one hundred forty-three".