143230091 has 2 divisors, whose sum is σ = 143230092. Its totient is φ = 143230090.

The previous prime is 143230027. The next prime is 143230123. The reversal of 143230091 is 190032341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143230091 - 2⁶ = 143230027 is a prime.

It is not a weakly prime, because it can be changed into another prime (143230691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71615045 + 71615046.

It is an arithmetic number, because the mean of its divisors is an integer number (71615046).

Almost surely, 2^143230091 is an apocalyptic number.

143230091 is a deficient number, since it is larger than the sum of its proper divisors (1).

143230091 is an equidigital number, since it uses as much as digits as its factorization.

143230091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 143230091 is about 11967.8774642791. The cubic root of 143230091 is about 523.2124737021.

The spelling of 143230091 in words is "one hundred forty-three million, two hundred thirty thousand, ninety-one".