231306134773 has 4 divisors (see below), whose sum is σ = 264349868320. Its totient is φ = 198262401228.

The previous prime is 231306134753. The next prime is 231306134849. The reversal of 231306134773 is 377431603132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231306134773 - 2¹⁷ = 231306003701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231306134713) 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 3 ways as a sum of consecutive naturals, for example, 16521866763 + ... + 16521866776.

It is an arithmetic number, because the mean of its divisors is an integer number (66087467080).

Almost surely, 2^231306134773 is an apocalyptic number.

It is an amenable number.

231306134773 is a deficient number, since it is larger than the sum of its proper divisors (33043733547).

231306134773 is an equidigital number, since it uses as much as digits as its factorization.

231306134773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33043733546.

The product of its (nonzero) digits is 190512, while the sum is 40.

The spelling of 231306134773 in words is "two hundred thirty-one billion, three hundred six million, one hundred thirty-four thousand, seven hundred seventy-three".