143123221346 has 16 divisors (see below), whose sum is σ = 245392153344. Its totient is φ = 61329008544.

The previous prime is 143123221333. The next prime is 143123221421. The reversal of 143123221346 is 643122321341.

It is a super-2 number, since 2×143123221346² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699050 + ... + 880293.

It is an arithmetic number, because the mean of its divisors is an integer number (15337009584).

Almost surely, 2^143123221346 is an apocalyptic number.

143123221346 is a deficient number, since it is larger than the sum of its proper divisors (102268931998).

143123221346 is a wasteful number, since it uses less digits than its factorization.

143123221346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585825.

The product of its digits is 20736, while the sum is 32.

Adding to 143123221346 its reverse (643122321341), we get a palindrome (786245542687).

The spelling of 143123221346 in words is "one hundred forty-three billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred forty-six".