143311221620 has 144 divisors (see below), whose sum is σ = 375247996032. Its totient is φ = 44994631680.

The previous prime is 143311221553. The next prime is 143311221659. The reversal of 143311221620 is 26122113341.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 143311221620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1449155 + ... + 1544885.

Almost surely, 2^143311221620 is an apocalyptic number.

143311221620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143311221620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187623998016).

143311221620 is an abundant number, since it is smaller than the sum of its proper divisors (231936774412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143311221620 is a wasteful number, since it uses less digits than its factorization.

143311221620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95818 (or 95799 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 143311221620 its reverse (26122113341), we get a palindrome (169433334961).

The spelling of 143311221620 in words is "one hundred forty-three billion, three hundred eleven million, two hundred twenty-one thousand, six hundred twenty".