143231022 has 48 divisors (see below), whose sum is σ = 346439808. Its totient is φ = 42391440.

The previous prime is 143231009. The next prime is 143231047. The reversal of 143231022 is 220132341.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 143230986 and 143231004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103 + ... + 16925.

It is an arithmetic number, because the mean of its divisors is an integer number (7217496).

Almost surely, 2^143231022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143231022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173219904).

143231022 is an abundant number, since it is smaller than the sum of its proper divisors (203208786).

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

143231022 is a wasteful number, since it uses less digits than its factorization.

143231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16885 (or 16882 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 143231022 is about 11967.9163600019. The cubic root of 143231022 is about 523.2136073320.

Adding to 143231022 its reverse (220132341), we get a palindrome (363363363).

The spelling of 143231022 in words is "one hundred forty-three million, two hundred thirty-one thousand, twenty-two".