231712055 has 4 divisors (see below), whose sum is σ = 278054472. Its totient is φ = 185369640.

The previous prime is 231712043. The next prime is 231712069. The reversal of 231712055 is 550217132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231712055 - 2²⁶ = 164603191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23171201 + ... + 23171210.

It is an arithmetic number, because the mean of its divisors is an integer number (69513618).

Almost surely, 2^231712055 is an apocalyptic number.

231712055 is a deficient number, since it is larger than the sum of its proper divisors (46342417).

231712055 is an equidigital number, since it uses as much as digits as its factorization.

231712055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46342416.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 231712055 is about 15222.0910193048. The cubic root of 231712055 is about 614.2090477474.

Adding to 231712055 its reverse (550217132), we get a palindrome (781929187).

The spelling of 231712055 in words is "two hundred thirty-one million, seven hundred twelve thousand, fifty-five".