143141231 has 4 divisors (see below), whose sum is σ = 150675000. Its totient is φ = 135607464.

The previous prime is 143141191. The next prime is 143141237. The reversal of 143141231 is 132141341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132141341 = 127 ⋅1040483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143141231 is a prime.

It is a super-2 number, since 2×143141231² = 40978824024390722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143141237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3766856 + ... + 3766893.

It is an arithmetic number, because the mean of its divisors is an integer number (37668750).

Almost surely, 2^143141231 is an apocalyptic number.

143141231 is a deficient number, since it is larger than the sum of its proper divisors (7533769).

143141231 is an equidigital number, since it uses as much as digits as its factorization.

143141231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533768.

The product of its digits is 288, while the sum is 20.

The square root of 143141231 is about 11964.1644505582. The cubic root of 143141231 is about 523.1042509162.

Adding to 143141231 its reverse (132141341), we get a palindrome (275282572).

The spelling of 143141231 in words is "one hundred forty-three million, one hundred forty-one thousand, two hundred thirty-one".