143431406 has 8 divisors (see below), whose sum is σ = 215344440. Its totient is φ = 71649928.

The previous prime is 143431403. The next prime is 143431429. The reversal of 143431406 is 604134341.

143431406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143431403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30116 + ... + 34551.

It is an arithmetic number, because the mean of its divisors is an integer number (26918055).

Almost surely, 2^143431406 is an apocalyptic number.

143431406 is a deficient number, since it is larger than the sum of its proper divisors (71913034).

143431406 is a wasteful number, since it uses less digits than its factorization.

143431406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65778.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 143431406 is about 11976.2851502459. The cubic root of 143431406 is about 523.4574902074.

Adding to 143431406 its reverse (604134341), we get a palindrome (747565747).

The spelling of 143431406 in words is "one hundred forty-three million, four hundred thirty-one thousand, four hundred six".