143213105 has 16 divisors (see below), whose sum is σ = 196680960. Its totient is φ = 98066112.

The previous prime is 143213101. The next prime is 143213129. The reversal of 143213105 is 501312341.

It is a cyclic number.

It is not a de Polignac number, because 143213105 - 2² = 143213101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143213101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26927 + ... + 31803.

It is an arithmetic number, because the mean of its divisors is an integer number (12292560).

Almost surely, 2^143213105 is an apocalyptic number.

It is an amenable number.

143213105 is a deficient number, since it is larger than the sum of its proper divisors (53467855).

143213105 is an equidigital number, since it uses as much as digits as its factorization.

143213105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 143213105 is about 11967.1677935926. The cubic root of 143213105 is about 523.1917898771.

Adding to 143213105 its reverse (501312341), we get a palindrome (644525446).

The spelling of 143213105 in words is "one hundred forty-three million, two hundred thirteen thousand, one hundred five".