193315289 has 2 divisors, whose sum is σ = 193315290. Its totient is φ = 193315288.

The previous prime is 193315273. The next prime is 193315303. The reversal of 193315289 is 982513391.

193315289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192737689 + 577600 = 13883^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 193315289 - 2⁴ = 193315273 is a prime.

It is a super-2 number, since 2×193315289² = 74741601922307042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (193315489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96657644 + 96657645.

It is an arithmetic number, because the mean of its divisors is an integer number (96657645).

Almost surely, 2^193315289 is an apocalyptic number.

It is an amenable number.

193315289 is a deficient number, since it is larger than the sum of its proper divisors (1).

193315289 is an equidigital number, since it uses as much as digits as its factorization.

193315289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 193315289 is about 13903.7868582628. The cubic root of 193315289 is about 578.2141751275.

The spelling of 193315289 in words is "one hundred ninety-three million, three hundred fifteen thousand, two hundred eighty-nine".