1143223305 has 32 divisors (see below), whose sum is σ = 2091869184. Its totient is φ = 522265536.

The previous prime is 1143223267. The next prime is 1143223307. The reversal of 1143223305 is 5033223411.

It is not a de Polignac number, because 1143223305 - 2⁹ = 1143222793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143223307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216102 + ... + 221328.

It is an arithmetic number, because the mean of its divisors is an integer number (65370912).

Almost surely, 2^1143223305 is an apocalyptic number.

1143223305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143223305 is a deficient number, since it is larger than the sum of its proper divisors (948645879).

1143223305 is a wasteful number, since it uses less digits than its factorization.

1143223305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1143223305 is about 33811.5853665574. The cubic root of 1143223305 is about 1045.6275634951.

Adding to 1143223305 its reverse (5033223411), we get a palindrome (6176446716).

The spelling of 1143223305 in words is "one billion, one hundred forty-three million, two hundred twenty-three thousand, three hundred five".