197148931 has 8 divisors (see below), whose sum is σ = 233082720. Its totient is φ = 163157568.

The previous prime is 197148929. The next prime is 197148947. The reversal of 197148931 is 139841791.

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

It is not a de Polignac number, because 197148931 - 2¹ = 197148929 is a prime.

It is a super-2 number, since 2×197148931² = 77735401988885522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197148961) 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, 485386 + ... + 485791.

It is an arithmetic number, because the mean of its divisors is an integer number (29135340).

Almost surely, 2^197148931 is an apocalyptic number.

197148931 is a deficient number, since it is larger than the sum of its proper divisors (35933789).

197148931 is an equidigital number, since it uses as much as digits as its factorization.

197148931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971213.

The product of its digits is 54432, while the sum is 43.

The square root of 197148931 is about 14040.9732924751. The cubic root of 197148931 is about 582.0113787567.

The spelling of 197148931 in words is "one hundred ninety-seven million, one hundred forty-eight thousand, nine hundred thirty-one".