197207311331 has 2 divisors, whose sum is σ = 197207311332. Its totient is φ = 197207311330.

The previous prime is 197207311319. The next prime is 197207311339. The reversal of 197207311331 is 133113702791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197207311331 - 2³⁰ = 196133569507 is a prime.

It is a super-2 number, since 2×197207311331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197207311339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98603655665 + 98603655666.

It is an arithmetic number, because the mean of its divisors is an integer number (98603655666).

Almost surely, 2^197207311331 is an apocalyptic number.

197207311331 is a deficient number, since it is larger than the sum of its proper divisors (1).

197207311331 is an equidigital number, since it uses as much as digits as its factorization.

197207311331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The spelling of 197207311331 in words is "one hundred ninety-seven billion, two hundred seven million, three hundred eleven thousand, three hundred thirty-one".