1697231 has 2 divisors, whose sum is σ = 1697232. Its totient is φ = 1697230.

The previous prime is 1697197. The next prime is 1697243. The reversal of 1697231 is 1327961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1697231 - 2¹⁰ = 1696207 is a prime.

It is a super-2 number, since 2×1697231² = 5761186134722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1697194 and 1697203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1697261) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848615 + 848616.

It is an arithmetic number, because the mean of its divisors is an integer number (848616).

2^1697231 is an apocalyptic number.

1697231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697231 is an equidigital number, since it uses as much as digits as its factorization.

1697231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 1697231 is about 1302.7781852641. The cubic root of 1697231 is about 119.2834848619.

The spelling of 1697231 in words is "one million, six hundred ninety-seven thousand, two hundred thirty-one".