143431040 has 64 divisors (see below), whose sum is σ = 363087360. Its totient is φ = 53993472.

The previous prime is 143431037. The next prime is 143431049. The reversal of 143431040 is 40134341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143431049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4289 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (5673240).

Almost surely, 2^143431040 is an apocalyptic number.

143431040 is a gapful number since it is divisible by the number (10) 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 143431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181543680).

143431040 is an abundant number, since it is smaller than the sum of its proper divisors (219656320).

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

143431040 is a wasteful number, since it uses less digits than its factorization.

143431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13219 (or 13207 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 143431040 is about 11976.2698700388. The cubic root of 143431040 is about 523.4570449641.

Adding to 143431040 its reverse (40134341), we get a palindrome (183565381).

The spelling of 143431040 in words is "one hundred forty-three million, four hundred thirty-one thousand, forty".