197127331 has 2 divisors, whose sum is σ = 197127332. Its totient is φ = 197127330.

The previous prime is 197127283. The next prime is 197127341. The reversal of 197127331 is 133721791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197127331 - 2⁹ = 197126819 is a prime.

It is a super-2 number, since 2×197127331² = 77718369254367122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197127341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98563665 + 98563666.

It is an arithmetic number, because the mean of its divisors is an integer number (98563666).

Almost surely, 2^197127331 is an apocalyptic number.

197127331 is a deficient number, since it is larger than the sum of its proper divisors (1).

197127331 is an equidigital number, since it uses as much as digits as its factorization.

197127331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 34.

The square root of 197127331 is about 14040.2040939582. The cubic root of 197127331 is about 581.9901225675.

The spelling of 197127331 in words is "one hundred ninety-seven million, one hundred twenty-seven thousand, three hundred thirty-one".