143213340 has 24 divisors (see below), whose sum is σ = 400997520. Its totient is φ = 38190208.

The previous prime is 143213311. The next prime is 143213353. The reversal of 143213340 is 43312341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193385 + ... + 1193504.

It is an arithmetic number, because the mean of its divisors is an integer number (16708230).

Almost surely, 2^143213340 is an apocalyptic number.

143213340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143213340 is an abundant number, since it is smaller than the sum of its proper divisors (257784180).

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

143213340 is a wasteful number, since it uses less digits than its factorization.

143213340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386901 (or 2386899 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 143213340 is about 11967.1776121189. The cubic root of 143213340 is about 523.1920760474.

Adding to 143213340 its reverse (43312341), we get a palindrome (186525681).

Subtracting from 143213340 its reverse (43312341), we obtain a palindrome (99900999).

The spelling of 143213340 in words is "one hundred forty-three million, two hundred thirteen thousand, three hundred forty".