143431312 has 80 divisors (see below), whose sum is σ = 311444352. Its totient is φ = 63641600.

The previous prime is 143431283. The next prime is 143431319. The reversal of 143431312 is 213134341.

It is not an unprimeable number, because it can be changed into a prime (143431319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631743 + ... + 631969.

Almost surely, 2^143431312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143431312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155722176).

143431312 is an abundant number, since it is smaller than the sum of its proper divisors (168013040).

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

143431312 is a wasteful number, since it uses less digits than its factorization.

143431312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 370 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 143431312 is about 11976.2812258230. The cubic root of 143431312 is about 523.4573758554.

Adding to 143431312 its reverse (213134341), we get a palindrome (356565653).

It can be divided in two parts, 143 and 431312, that multiplied together give a palindrome (61677616).

The spelling of 143431312 in words is "one hundred forty-three million, four hundred thirty-one thousand, three hundred twelve".