231241897197 has 30 divisors (see below), whose sum is σ = 366950473098. Its totient is φ = 145092940416.

The previous prime is 231241897127. The next prime is 231241897199. The reversal of 231241897197 is 791798142132.

231241897197 is a `hidden beast` number, since 2 + 31 + 2 + 418 + 9 + 7 + 197 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 31800162276 + 199441734921 = 178326^2 + 446589^2 .

It is not a de Polignac number, because 231241897197 - 2¹² = 231241893101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241897199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4915758 + ... + 4962575.

Almost surely, 2^231241897197 is an apocalyptic number.

231241897197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

231241897197 is a deficient number, since it is larger than the sum of its proper divisors (135708575901).

231241897197 is an equidigital number, since it uses as much as digits as its factorization.

231241897197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878379 (or 9878353 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 231241897197 in words is "two hundred thirty-one billion, two hundred forty-one million, eight hundred ninety-seven thousand, one hundred ninety-seven".