143143231 has 16 divisors (see below), whose sum is σ = 179417088. Its totient is φ = 110944800.

The previous prime is 143143229. The next prime is 143143241. The reversal of 143143231 is 132341341.

It is a cyclic number.

It is not a de Polignac number, because 143143231 - 2¹ = 143143229 is a prime.

It is a super-2 number, since 2×143143231² = 40979969162238722, 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 (143143241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9841 + ... + 19573.

It is an arithmetic number, because the mean of its divisors is an integer number (11213568).

Almost surely, 2^143143231 is an apocalyptic number.

143143231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143143231 is a deficient number, since it is larger than the sum of its proper divisors (36273857).

143143231 is a wasteful number, since it uses less digits than its factorization.

143143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9942.

The product of its digits is 864, while the sum is 22.

The square root of 143143231 is about 11964.2480332029. The cubic root of 143143231 is about 523.1066872131.

Adding to 143143231 its reverse (132341341), we get a palindrome (275484572).

It can be divided in two parts, 143143 and 231, that multiplied together give a palindrome (33066033).

The spelling of 143143231 in words is "one hundred forty-three million, one hundred forty-three thousand, two hundred thirty-one".