143345431 has 2 divisors, whose sum is σ = 143345432. Its totient is φ = 143345430.

The previous prime is 143345383. The next prime is 143345459. The reversal of 143345431 is 134543341.

It is an a-pointer prime, because the next prime (143345459) can be obtained adding 143345431 to its sum of digits (28).

It is a strong prime.

It is an emirp because it is prime and its reverse (134543341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143345431 - 2¹⁷ = 143214359 is a prime.

It is a super-2 number, since 2×143345431² = 41095825177151522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143345431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143345491) 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 as a sum of consecutive naturals, namely, 71672715 + 71672716.

It is an arithmetic number, because the mean of its divisors is an integer number (71672716).

Almost surely, 2^143345431 is an apocalyptic number.

143345431 is a deficient number, since it is larger than the sum of its proper divisors (1).

143345431 is an equidigital number, since it uses as much as digits as its factorization.

143345431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 143345431 is about 11972.6952270573. The cubic root of 143345431 is about 523.3528798015.

Adding to 143345431 its reverse (134543341), we get a palindrome (277888772).

It can be divided in two parts, 1433 and 45431, that added together give a palindrome (46864).

The spelling of 143345431 in words is "one hundred forty-three million, three hundred forty-five thousand, four hundred thirty-one".