197345281 has 8 divisors (see below), whose sum is σ = 228714624. Its totient is φ = 166770240.

The previous prime is 197345279. The next prime is 197345321. The reversal of 197345281 is 182543791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197345281 - 2¹ = 197345279 is a prime.

It is a super-2 number, since 2×197345281² = 77890319865937922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197345201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198040 + ... + 199033.

It is an arithmetic number, because the mean of its divisors is an integer number (28589328).

It is a Proth number, since it is equal to 12045 ⋅ 2¹⁴ + 1 and 12045 < 2¹⁴.

Almost surely, 2^197345281 is an apocalyptic number.

It is an amenable number.

197345281 is a deficient number, since it is larger than the sum of its proper divisors (31369343).

197345281 is an equidigital number, since it uses as much as digits as its factorization.

197345281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397151.

The product of its digits is 60480, while the sum is 40.

The square root of 197345281 is about 14047.9635890758. The cubic root of 197345281 is about 582.2045322546.

The spelling of 197345281 in words is "one hundred ninety-seven million, three hundred forty-five thousand, two hundred eighty-one".