197305331 has 2 divisors, whose sum is σ = 197305332. Its totient is φ = 197305330.

The previous prime is 197305319. The next prime is 197305337. The reversal of 197305331 is 133503791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197305331 - 2⁶ = 197305267 is a prime.

It is a super-2 number, since 2×197305331² = 77858787282039122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197305337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98652665 + 98652666.

It is an arithmetic number, because the mean of its divisors is an integer number (98652666).

Almost surely, 2^197305331 is an apocalyptic number.

197305331 is a deficient number, since it is larger than the sum of its proper divisors (1).

197305331 is an equidigital number, since it uses as much as digits as its factorization.

197305331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 32.

The square root of 197305331 is about 14046.5416028288. The cubic root of 197305331 is about 582.1652430106.

The spelling of 197305331 in words is "one hundred ninety-seven million, three hundred five thousand, three hundred thirty-one".