231263173 has 2 divisors, whose sum is σ = 231263174. Its totient is φ = 231263172.

The previous prime is 231263161. The next prime is 231263177. The reversal of 231263173 is 371362132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225660484 + 5602689 = 15022^2 + 2367^2 .

It is a cyclic number.

It is not a de Polignac number, because 231263173 - 2⁵ = 231263141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231263177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115631586 + 115631587.

It is an arithmetic number, because the mean of its divisors is an integer number (115631587).

Almost surely, 2^231263173 is an apocalyptic number.

It is an amenable number.

231263173 is a deficient number, since it is larger than the sum of its proper divisors (1).

231263173 is an equidigital number, since it uses as much as digits as its factorization.

231263173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 231263173 is about 15207.3394451495. The cubic root of 231263173 is about 613.8121677853.

The spelling of 231263173 in words is "two hundred thirty-one million, two hundred sixty-three thousand, one hundred seventy-three".