1143212103 has 64 divisors (see below), whose sum is σ = 1921881600. Its totient is φ = 665280000.

The previous prime is 1143212099. The next prime is 1143212131. The reversal of 1143212103 is 3012123411.

It is not a de Polignac number, because 1143212103 - 2² = 1143212099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143211103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2850703 + ... + 2851103.

It is an arithmetic number, because the mean of its divisors is an integer number (30029400).

Almost surely, 2^1143212103 is an apocalyptic number.

1143212103 is a deficient number, since it is larger than the sum of its proper divisors (778669497).

1143212103 is a wasteful number, since it uses less digits than its factorization.

1143212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1143212103 is about 33811.4197128722. The cubic root of 1143212103 is about 1045.6241482515.

Adding to 1143212103 its reverse (3012123411), we get a palindrome (4155335514).

The spelling of 1143212103 in words is "one billion, one hundred forty-three million, two hundred twelve thousand, one hundred three".