143082991 has 2 divisors, whose sum is σ = 143082992. Its totient is φ = 143082990.

The previous prime is 143082911. The next prime is 143082997. The reversal of 143082991 is 199280341.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143082991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143082991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143082997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71541495 + 71541496.

It is an arithmetic number, because the mean of its divisors is an integer number (71541496).

Almost surely, 2^143082991 is an apocalyptic number.

143082991 is a deficient number, since it is larger than the sum of its proper divisors (1).

143082991 is an equidigital number, since it uses as much as digits as its factorization.

143082991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 143082991 is about 11961.7302678166. The cubic root of 143082991 is about 523.0332959949.

The spelling of 143082991 in words is "one hundred forty-three million, eighty-two thousand, nine hundred ninety-one".