197230961 has 2 divisors, whose sum is σ = 197230962. Its totient is φ = 197230960.

The previous prime is 197230949. The next prime is 197230987. The reversal of 197230961 is 169032791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 98109025 = 9956^2 + 9905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197230961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197230921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98615480 + 98615481.

It is an arithmetic number, because the mean of its divisors is an integer number (98615481).

Almost surely, 2^197230961 is an apocalyptic number.

It is an amenable number.

197230961 is a deficient number, since it is larger than the sum of its proper divisors (1).

197230961 is an equidigital number, since it uses as much as digits as its factorization.

197230961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 197230961 is about 14043.8940824830. The cubic root of 197230961 is about 582.0920889303.

The spelling of 197230961 in words is "one hundred ninety-seven million, two hundred thirty thousand, nine hundred sixty-one".