190231193 has 2 divisors, whose sum is σ = 190231194. Its totient is φ = 190231192.

The previous prime is 190231187. The next prime is 190231243. The reversal of 190231193 is 391132091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189255049 + 976144 = 13757^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 190231193 - 2²⁴ = 173453977 is a prime.

It is not a weakly prime, because it can be changed into another prime (190239193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95115596 + 95115597.

It is an arithmetic number, because the mean of its divisors is an integer number (95115597).

Almost surely, 2^190231193 is an apocalyptic number.

It is an amenable number.

190231193 is a deficient number, since it is larger than the sum of its proper divisors (1).

190231193 is an equidigital number, since it uses as much as digits as its factorization.

190231193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 190231193 is about 13792.4324540670. The cubic root of 190231193 is about 575.1227896558.

The spelling of 190231193 in words is "one hundred ninety million, two hundred thirty-one thousand, one hundred ninety-three".