143431401 has 4 divisors (see below), whose sum is σ = 191241872. Its totient is φ = 95620932.

The previous prime is 143431367. The next prime is 143431403. The reversal of 143431401 is 104134341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 143431401 - 2¹⁷ = 143300329 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23905231 + ... + 23905236.

It is an arithmetic number, because the mean of its divisors is an integer number (47810468).

Almost surely, 2^143431401 is an apocalyptic number.

It is an amenable number.

143431401 is a deficient number, since it is larger than the sum of its proper divisors (47810471).

143431401 is an equidigital number, since it uses as much as digits as its factorization.

143431401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47810470.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 143431401 is about 11976.2849415000. The cubic root of 143431401 is about 523.4574841248.

Adding to 143431401 its reverse (104134341), we get a palindrome (247565742).

The spelling of 143431401 in words is "one hundred forty-three million, four hundred thirty-one thousand, four hundred one".