1143105523 has 8 divisors (see below), whose sum is σ = 1309700192. Its totient is φ = 977334336.

The previous prime is 1143105419. The next prime is 1143105581. The reversal of 1143105523 is 3255013411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143105523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143105323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202890 + ... + 208447.

It is an arithmetic number, because the mean of its divisors is an integer number (163712524).

Almost surely, 2^1143105523 is an apocalyptic number.

1143105523 is a deficient number, since it is larger than the sum of its proper divisors (166594669).

1143105523 is an equidigital number, since it uses as much as digits as its factorization.

1143105523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411741.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1143105523 is about 33809.8435814187. The cubic root of 1143105523 is about 1045.5916532360.

Adding to 1143105523 its reverse (3255013411), we get a palindrome (4398118934).

The spelling of 1143105523 in words is "one billion, one hundred forty-three million, one hundred five thousand, five hundred twenty-three".