191353 has 2 divisors, whose sum is σ = 191354. Its totient is φ = 191352.

The previous prime is 191341. The next prime is 191413. The reversal of 191353 is 353191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 21609 = 412^2 + 147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191353 is a prime.

It is not a weakly prime, because it can be changed into another prime (191453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95676 + 95677.

It is an arithmetic number, because the mean of its divisors is an integer number (95677).

2¹⁹¹³⁵³ is an apocalyptic number.

It is an amenable number.

191353 is a deficient number, since it is larger than the sum of its proper divisors (1).

191353 is an equidigital number, since it uses as much as digits as its factorization.

191353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405, while the sum is 22.

The square root of 191353 is about 437.4391386239. The cubic root of 191353 is about 57.6251088126.

The spelling of 191353 in words is "one hundred ninety-one thousand, three hundred fifty-three".