193531141 has 2 divisors, whose sum is σ = 193531142. Its totient is φ = 193531140.

The previous prime is 193531139. The next prime is 193531157. The reversal of 193531141 is 141135391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101082916 + 92448225 = 10054^2 + 9615^2 .

It is a cyclic number.

It is not a de Polignac number, because 193531141 - 2¹ = 193531139 is a prime.

Together with 193531139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193531241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96765570 + 96765571.

It is an arithmetic number, because the mean of its divisors is an integer number (96765571).

Almost surely, 2^193531141 is an apocalyptic number.

It is an amenable number.

193531141 is a deficient number, since it is larger than the sum of its proper divisors (1).

193531141 is an equidigital number, since it uses as much as digits as its factorization.

193531141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 193531141 is about 13911.5470383419. The cubic root of 193531141 is about 578.4293025541.

The spelling of 193531141 in words is "one hundred ninety-three million, five hundred thirty-one thousand, one hundred forty-one".