170312393 has 2 divisors, whose sum is σ = 170312394. Its totient is φ = 170312392.

The previous prime is 170312381. The next prime is 170312399. The reversal of 170312393 is 393213071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166203664 + 4108729 = 12892^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 170312393 - 2¹⁰ = 170311369 is a prime.

It is a super-2 number, since 2×170312393² = 58012622418772898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170312399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85156196 + 85156197.

It is an arithmetic number, because the mean of its divisors is an integer number (85156197).

Almost surely, 2^170312393 is an apocalyptic number.

It is an amenable number.

170312393 is a deficient number, since it is larger than the sum of its proper divisors (1).

170312393 is an equidigital number, since it uses as much as digits as its factorization.

170312393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 170312393 is about 13050.3790366410. The cubic root of 170312393 is about 554.3049416596.

The spelling of 170312393 in words is "one hundred seventy million, three hundred twelve thousand, three hundred ninety-three".