231113173 has 2 divisors, whose sum is σ = 231113174. Its totient is φ = 231113172.

The previous prime is 231113167. The next prime is 231113219. The reversal of 231113173 is 371311132.

231113173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223143844 + 7969329 = 14938^2 + 2823^2 .

It is a cyclic number.

It is not a de Polignac number, because 231113173 - 2²⁵ = 197558741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231113143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115556586 + 115556587.

It is an arithmetic number, because the mean of its divisors is an integer number (115556587).

Almost surely, 2^231113173 is an apocalyptic number.

It is an amenable number.

231113173 is a deficient number, since it is larger than the sum of its proper divisors (1).

231113173 is an equidigital number, since it uses as much as digits as its factorization.

231113173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 22.

The square root of 231113173 is about 15202.4068160275. The cubic root of 231113173 is about 613.6794304981.

The spelling of 231113173 in words is "two hundred thirty-one million, one hundred thirteen thousand, one hundred seventy-three".