197181713 has 2 divisors, whose sum is σ = 197181714. Its totient is φ = 197181712.

The previous prime is 197181671. The next prime is 197181727. The reversal of 197181713 is 317181791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191877904 + 5303809 = 13852^2 + 2303^2 .

It is a cyclic number.

It is not a de Polignac number, because 197181713 - 2¹⁶ = 197116177 is a prime.

It is a super-2 number, since 2×197181713² = 77761255883228738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197181773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98590856 + 98590857.

It is an arithmetic number, because the mean of its divisors is an integer number (98590857).

Almost surely, 2^197181713 is an apocalyptic number.

It is an amenable number.

197181713 is a deficient number, since it is larger than the sum of its proper divisors (1).

197181713 is an equidigital number, since it uses as much as digits as its factorization.

197181713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 38.

The square root of 197181713 is about 14042.1406131686. The cubic root of 197181713 is about 582.0436359941.

The spelling of 197181713 in words is "one hundred ninety-seven million, one hundred eighty-one thousand, seven hundred thirteen".