143130312 has 96 divisors (see below), whose sum is σ = 431940600. Its totient is φ = 42513408.

The previous prime is 143130307. The next prime is 143130313. The reversal of 143130312 is 213031341.

It can be written as a sum of positive squares in 4 ways, for example, as 100280196 + 42850116 = 10014^2 + 6546^2 .

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

It is not an unprimeable number, because it can be changed into a prime (143130313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24508 + ... + 29780.

Almost surely, 2^143130312 is an apocalyptic number.

143130312 is a gapful number since it is divisible by the number (12) 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 143130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215970300).

143130312 is an abundant number, since it is smaller than the sum of its proper divisors (288810288).

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

143130312 is a wasteful number, since it uses less digits than its factorization.

143130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327 (or 5320 counting only the distinct ones).

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

The square root of 143130312 is about 11963.7081208127. The cubic root of 143130312 is about 523.0909495529.

Adding to 143130312 its reverse (213031341), we get a palindrome (356161653).

The spelling of 143130312 in words is "one hundred forty-three million, one hundred thirty thousand, three hundred twelve".