143342231 has 2 divisors, whose sum is σ = 143342232. Its totient is φ = 143342230.

The previous prime is 143342219. The next prime is 143342239. The reversal of 143342231 is 132243341.

143342231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (132243341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143342231 is a prime.

It is a super-2 number, since 2×143342231² = 41093990376114722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143342197 and 143342206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143342239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71671115 + 71671116.

It is an arithmetic number, because the mean of its divisors is an integer number (71671116).

Almost surely, 2^143342231 is an apocalyptic number.

143342231 is a deficient number, since it is larger than the sum of its proper divisors (1).

143342231 is an equidigital number, since it uses as much as digits as its factorization.

143342231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 143342231 is about 11972.5615888998. The cubic root of 143342231 is about 523.3489853821.

Adding to 143342231 its reverse (132243341), we get a palindrome (275585572).

The spelling of 143342231 in words is "one hundred forty-three million, three hundred forty-two thousand, two hundred thirty-one".