143303431 has 2 divisors, whose sum is σ = 143303432. Its totient is φ = 143303430.

The previous prime is 143303417. The next prime is 143303443. The reversal of 143303431 is 134303341.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (134303341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143303431 - 2⁵ = 143303399 is a prime.

It is a super-2 number, since 2×143303431² = 41071746672743522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143309431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71651715 + 71651716.

It is an arithmetic number, because the mean of its divisors is an integer number (71651716).

Almost surely, 2^143303431 is an apocalyptic number.

143303431 is a deficient number, since it is larger than the sum of its proper divisors (1).

143303431 is an equidigital number, since it uses as much as digits as its factorization.

143303431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 143303431 is about 11970.9411075320. The cubic root of 143303431 is about 523.3017609344.

Adding to 143303431 its reverse (134303341), we get a palindrome (277606772).

The spelling of 143303431 in words is "one hundred forty-three million, three hundred three thousand, four hundred thirty-one".