143056231 has 2 divisors, whose sum is σ = 143056232. Its totient is φ = 143056230.

The previous prime is 143056219. The next prime is 143056253. The reversal of 143056231 is 132650341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143056231 - 2⁹ = 143055719 is a prime.

It is a super-2 number, since 2×143056231² = 40930170455850722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143056196 and 143056205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143056201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71528115 + 71528116.

It is an arithmetic number, because the mean of its divisors is an integer number (71528116).

Almost surely, 2^143056231 is an apocalyptic number.

143056231 is a deficient number, since it is larger than the sum of its proper divisors (1).

143056231 is an equidigital number, since it uses as much as digits as its factorization.

143056231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 143056231 is about 11960.6116482394. The cubic root of 143056231 is about 523.0006873120. Note that the first 3 decimals are identical.

The spelling of 143056231 in words is "one hundred forty-three million, fifty-six thousand, two hundred thirty-one".