143243631 has 12 divisors (see below), whose sum is σ = 209233440. Its totient is φ = 94422240.

The previous prime is 143243623. The next prime is 143243657. The reversal of 143243631 is 136342341.

143243631 is a `hidden beast` number, since 1 + 4 + 3 + 24 + 3 + 631 = 666.

It is not a de Polignac number, because 143243631 - 2³ = 143243623 is a prime.

It is a super-2 number, since 2×143243631² = 41037475644128322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143243595 and 143243604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143243671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88615 + ... + 90216.

It is an arithmetic number, because the mean of its divisors is an integer number (17436120).

Almost surely, 2^143243631 is an apocalyptic number.

143243631 is a deficient number, since it is larger than the sum of its proper divisors (65989809).

143243631 is a wasteful number, since it uses less digits than its factorization.

143243631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178926 (or 178923 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 143243631 is about 11968.4431318363. The cubic root of 143243631 is about 523.2289601672.

Adding to 143243631 its reverse (136342341), we get a palindrome (279585972).

It can be divided in two parts, 14324 and 3631, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 143243631 in words is "one hundred forty-three million, two hundred forty-three thousand, six hundred thirty-one".