143321012 has 6 divisors (see below), whose sum is σ = 250811778. Its totient is φ = 71660504.

The previous prime is 143320963. The next prime is 143321023. The reversal of 143321012 is 210123341.

143321012 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133310116 + 10010896 = 11546^2 + 3164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17915123 + ... + 17915130.

It is an arithmetic number, because the mean of its divisors is an integer number (41801963).

Almost surely, 2^143321012 is an apocalyptic number.

It is an amenable number.

143321012 is a deficient number, since it is larger than the sum of its proper divisors (107490766).

143321012 is a wasteful number, since it uses less digits than its factorization.

143321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35830257 (or 35830255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 143321012 is about 11971.6754048880. The cubic root of 143321012 is about 523.3231602640.

Adding to 143321012 its reverse (210123341), we get a palindrome (353444353).

The spelling of 143321012 in words is "one hundred forty-three million, three hundred twenty-one thousand, twelve".