197219531 has 2 divisors, whose sum is σ = 197219532. Its totient is φ = 197219530.

The previous prime is 197219521. The next prime is 197219557. The reversal of 197219531 is 135912791.

197219531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197219531 - 2⁶ = 197219467 is a prime.

It is a super-2 number, since 2×197219531² = 77791086815719922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197219521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98609765 + 98609766.

It is an arithmetic number, because the mean of its divisors is an integer number (98609766).

Almost surely, 2^197219531 is an apocalyptic number.

197219531 is a deficient number, since it is larger than the sum of its proper divisors (1).

197219531 is an equidigital number, since it uses as much as digits as its factorization.

197219531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 197219531 is about 14043.4871381719. The cubic root of 197219531 is about 582.0808441760.

The spelling of 197219531 in words is "one hundred ninety-seven million, two hundred nineteen thousand, five hundred thirty-one".