143123221349 has 16 divisors (see below), whose sum is σ = 147682362240. Its totient is φ = 138637437120.

The previous prime is 143123221333. The next prime is 143123221421. The reversal of 143123221349 is 943122321341.

It is a cyclic number.

It is not a de Polignac number, because 143123221349 - 2⁴ = 143123221333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143128221349) 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, 8256239 + ... + 8273555.

It is an arithmetic number, because the mean of its divisors is an integer number (9230147640).

Almost surely, 2^143123221349 is an apocalyptic number.

It is an amenable number.

143123221349 is a deficient number, since it is larger than the sum of its proper divisors (4559140891).

143123221349 is a wasteful number, since it uses less digits than its factorization.

143123221349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19420.

The product of its digits is 31104, while the sum is 35.

The spelling of 143123221349 in words is "one hundred forty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred forty-nine".