231241203173 has 2 divisors, whose sum is σ = 231241203174. Its totient is φ = 231241203172.

The previous prime is 231241203169. The next prime is 231241203209. The reversal of 231241203173 is 371302142132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148904917924 + 82336285249 = 385882^2 + 286943^2 .

It is a cyclic number.

It is not a de Polignac number, because 231241203173 - 2² = 231241203169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231241203133) 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 as a sum of consecutive naturals, namely, 115620601586 + 115620601587.

It is an arithmetic number, because the mean of its divisors is an integer number (115620601587).

Almost surely, 2^231241203173 is an apocalyptic number.

It is an amenable number.

231241203173 is a deficient number, since it is larger than the sum of its proper divisors (1).

231241203173 is an equidigital number, since it uses as much as digits as its factorization.

231241203173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The spelling of 231241203173 in words is "two hundred thirty-one billion, two hundred forty-one million, two hundred three thousand, one hundred seventy-three".