143971 has 2 divisors, whose sum is σ = 143972. Its totient is φ = 143970.

The previous prime is 143953. The next prime is 143977. The reversal of 143971 is 179341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143971 - 2¹⁷ = 12899 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (143977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71985 + 71986.

It is an arithmetic number, because the mean of its divisors is an integer number (71986).

2¹⁴³⁹⁷¹ is an apocalyptic number.

143971 is a deficient number, since it is larger than the sum of its proper divisors (1).

143971 is an equidigital number, since it uses as much as digits as its factorization.

143971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 143971 is about 379.4351064411. The cubic root of 143971 is about 52.4113090600.

The spelling of 143971 in words is "one hundred forty-three thousand, nine hundred seventy-one".