143221352 has 8 divisors (see below), whose sum is σ = 268540050. Its totient is φ = 71610672.

The previous prime is 143221349. The next prime is 143221357. The reversal of 143221352 is 253122341.

It can be written as a sum of positive squares in only one way, i.e., 118679236 + 24542116 = 10894^2 + 4954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (143221357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8951327 + ... + 8951342.

Almost surely, 2^143221352 is an apocalyptic number.

It is an amenable number.

143221352 is a deficient number, since it is larger than the sum of its proper divisors (125318698).

143221352 is a wasteful number, since it uses less digits than its factorization.

143221352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17902675 (or 17902671 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 143221352 is about 11967.5123563755. The cubic root of 143221352 is about 523.2018324400.

Adding to 143221352 its reverse (253122341), we get a palindrome (396343693).

The spelling of 143221352 in words is "one hundred forty-three million, two hundred twenty-one thousand, three hundred fifty-two".