197315357 has 2 divisors, whose sum is σ = 197315358. Its totient is φ = 197315356.

The previous prime is 197315309. The next prime is 197315381. The reversal of 197315357 is 753513791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 70324996 = 11269^2 + 8386^2 .

It is a cyclic number.

It is not a de Polignac number, because 197315357 - 2¹⁰ = 197314333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197315387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98657678 + 98657679.

It is an arithmetic number, because the mean of its divisors is an integer number (98657679).

Almost surely, 2^197315357 is an apocalyptic number.

It is an amenable number.

197315357 is a deficient number, since it is larger than the sum of its proper divisors (1).

197315357 is an equidigital number, since it uses as much as digits as its factorization.

197315357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99225, while the sum is 41.

The square root of 197315357 is about 14046.8984832952. The cubic root of 197315357 is about 582.1751036832.

The spelling of 197315357 in words is "one hundred ninety-seven million, three hundred fifteen thousand, three hundred fifty-seven".