143431 has 4 divisors (see below), whose sum is σ = 151000. Its totient is φ = 135864.

The previous prime is 143419. The next prime is 143443. The reversal of 143431 is 134341.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (143419) and next prime (143443).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143431 is a prime.

It is a super-2 number, since 2×143431² = 41144903522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3756 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (37750).

2¹⁴³⁴³¹ is an apocalyptic number.

143431 is a deficient number, since it is larger than the sum of its proper divisors (7569).

143431 is an equidigital number, since it uses as much as digits as its factorization.

143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7568.

The product of its digits is 144, while the sum is 16.

The square root of 143431 is about 378.7228538127. The cubic root of 143431 is about 52.3456996304.

Adding to 143431 its reverse (134341), we get a palindrome (277772).

The spelling of 143431 in words is "one hundred forty-three thousand, four hundred thirty-one".