143311230 has 48 divisors (see below), whose sum is σ = 374933520. Its totient is φ = 37977984.

The previous prime is 143311219. The next prime is 143311247. The reversal of 143311230 is 32113341.

143311230 is a `hidden beast` number, since 1 + 433 + 1 + 1 + 230 = 666.

It is a super-2 number, since 2×143311230² = 41076217288225800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9786 + ... + 19554.

It is an arithmetic number, because the mean of its divisors is an integer number (7811115).

Almost surely, 2^143311230 is an apocalyptic number.

143311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 143311230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187466760).

143311230 is an abundant number, since it is smaller than the sum of its proper divisors (231622290).

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

143311230 is a wasteful number, since it uses less digits than its factorization.

143311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945 (or 9942 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 143311230 is about 11971.2668502544. The cubic root of 143311230 is about 523.3112539763.

Adding to 143311230 its reverse (32113341), we get a palindrome (175424571).

The spelling of 143311230 in words is "one hundred forty-three million, three hundred eleven thousand, two hundred thirty".