197219131 has 2 divisors, whose sum is σ = 197219132. Its totient is φ = 197219130.

The previous prime is 197219129. The next prime is 197219153. The reversal of 197219131 is 131912791.

It is a weak prime.

It is an emirp because it is prime and its reverse (131912791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197219131 - 2¹ = 197219129 is a prime.

It is a super-2 number, since 2×197219131² = 77790771264790322, which contains 22 as substring.

Together with 197219129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (197219101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98609565 + 98609566.

It is an arithmetic number, because the mean of its divisors is an integer number (98609566).

Almost surely, 2^197219131 is an apocalyptic number.

197219131 is a deficient number, since it is larger than the sum of its proper divisors (1).

197219131 is an equidigital number, since it uses as much as digits as its factorization.

197219131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 34.

The square root of 197219131 is about 14043.4728966876. The cubic root of 197219131 is about 582.0804506509.

The spelling of 197219131 in words is "one hundred ninety-seven million, two hundred nineteen thousand, one hundred thirty-one".