1697012143 has 2 divisors, whose sum is σ = 1697012144. Its totient is φ = 1697012142.

The previous prime is 1697012123. The next prime is 1697012159. The reversal of 1697012143 is 3412107961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1697012143 - 2²⁵ = 1663457711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1697012099 and 1697012108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1697012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848506071 + 848506072.

It is an arithmetic number, because the mean of its divisors is an integer number (848506072).

Almost surely, 2^1697012143 is an apocalyptic number.

1697012143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697012143 is an equidigital number, since it uses as much as digits as its factorization.

1697012143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1697012143 is about 41194.8072334366. The cubic root of 1697012143 is about 1192.7835746169.

The spelling of 1697012143 in words is "one billion, six hundred ninety-seven million, twelve thousand, one hundred forty-three".